- Fri Jan 21, 2011 12:00 am
#60940
Complete Question Explanation
Justify the Conclusion. The correct answer choice is (A)
In this stimulus, we are given several conditional statements:
1) The solution to any non-government-caused serious environmental problem can only lay in major consumer habit changes (MC). This can be diagrammed as follows:
SG MC
2) These major changes will only occur with economic enticement (EE):
MC EE
3) Therefore (i.e., in conclusion), few problems of any kind will be solved without enticement. In other words, if there is no enticement, not many problems will be solved:
EE many problems solved. (contrapositive: many problems solved EE)
The leap between the premises is subtle, but important: The argument begins with the premise that economic enticement is needed to bring about consumer changes necessary to solve non-government-caused problems. The author then jumps to the conclusion that without these economic enticements, few environmental problems will be solved (whether or not government-caused). When we notice a leap like this one and are asked to justify the conclusion, we should seek the answer choice which fills in this gap and allows for the conclusion to be properly drawn.
Answer choice (A): This is the correct answer choice. The premises in the stimulus only offer information about non-government-caused problems. If we assume, as this answer choice provides, that most problems fall into this category (of non-government-caused problems), then the premises in the stimulus justify the author’s conclusion.
This answer choice can be diagrammed as follows:
Major problem Not Due to Government
If we add this to the premises from the stimulus, we arrive at the following logic chain:
Major problem Not Due to Government SG MC EE
In other words, we can now properly conclude that most major problems will indeed require economic enticement, which is another way to phrase the conclusion in the stimulus.
Answer choice (B): This answer choice concerns environmental problems that are the result of government mismanagement, and the feasibility of their solutions. The stimulus deals with environmental problems that are not the result of government mismanagement. Since these are entirely different sets of problems, this choice is incorrect.
Answer choice (C): This choice concerns the feasibility of offering economic enticements, but the stimulus only concerns whether it is necessary to make enticements. Note: A necessary condition can be impossible; this would not prove that the condition was not necessary, it would merely prove that the sufficient condition could not occur. This choice does not address the gap in the stimulus and is therefore incorrect.
Answer choice (D): This choice is not a supporter assumption; it addresses the proportion of non-government-caused environmental problems that are major. This is not relevant to the discussion, and it does not provide any required link between the variables in the stimulus.
Answer choice (E): The argument in the stimulus does not concern whether changes in consumer habits are sufficient to solve the most serious problems, but rather whether major changes are necessary to solve those problems, so this answer choice does not reflect an assumption required by the argument. Furthermore, this choice does not address the leap in the stimulus from non-government-induced problems to serious problems in general.
Justify the Conclusion. The correct answer choice is (A)
In this stimulus, we are given several conditional statements:
1) The solution to any non-government-caused serious environmental problem can only lay in major consumer habit changes (MC). This can be diagrammed as follows:
SG MC
2) These major changes will only occur with economic enticement (EE):
MC EE
3) Therefore (i.e., in conclusion), few problems of any kind will be solved without enticement. In other words, if there is no enticement, not many problems will be solved:
EE many problems solved. (contrapositive: many problems solved EE)
The leap between the premises is subtle, but important: The argument begins with the premise that economic enticement is needed to bring about consumer changes necessary to solve non-government-caused problems. The author then jumps to the conclusion that without these economic enticements, few environmental problems will be solved (whether or not government-caused). When we notice a leap like this one and are asked to justify the conclusion, we should seek the answer choice which fills in this gap and allows for the conclusion to be properly drawn.
Answer choice (A): This is the correct answer choice. The premises in the stimulus only offer information about non-government-caused problems. If we assume, as this answer choice provides, that most problems fall into this category (of non-government-caused problems), then the premises in the stimulus justify the author’s conclusion.
This answer choice can be diagrammed as follows:
Major problem Not Due to Government
If we add this to the premises from the stimulus, we arrive at the following logic chain:
Major problem Not Due to Government SG MC EE
In other words, we can now properly conclude that most major problems will indeed require economic enticement, which is another way to phrase the conclusion in the stimulus.
Answer choice (B): This answer choice concerns environmental problems that are the result of government mismanagement, and the feasibility of their solutions. The stimulus deals with environmental problems that are not the result of government mismanagement. Since these are entirely different sets of problems, this choice is incorrect.
Answer choice (C): This choice concerns the feasibility of offering economic enticements, but the stimulus only concerns whether it is necessary to make enticements. Note: A necessary condition can be impossible; this would not prove that the condition was not necessary, it would merely prove that the sufficient condition could not occur. This choice does not address the gap in the stimulus and is therefore incorrect.
Answer choice (D): This choice is not a supporter assumption; it addresses the proportion of non-government-caused environmental problems that are major. This is not relevant to the discussion, and it does not provide any required link between the variables in the stimulus.
Answer choice (E): The argument in the stimulus does not concern whether changes in consumer habits are sufficient to solve the most serious problems, but rather whether major changes are necessary to solve those problems, so this answer choice does not reflect an assumption required by the argument. Furthermore, this choice does not address the leap in the stimulus from non-government-induced problems to serious problems in general.