- Sun Aug 23, 2020 11:57 pm
#78344
Hi Lina! Let's take a look at this problem.
This is an Assumption question. For Assumption questions, we're trying to find an Assumption that the argument in the stimulus makes that needs to be true in order for the conclusion to make sense.
The first step for Assumption questions is to analyze the stimulus. I identify the conclusion, which here is the last sentence of the stimulus. I then take note of the premises: "A larger percentage of the British population vacations abroad today than they did 30 years ago", and "Foreign travel is and always has been expensive for the British". I then look to identify any potential Gaps between conclusion and premises. That is, does everything about the conclusion 100% logically follow from the premises? Or is there something (in addition to the premises) that the argument is Assuming in order to reach the conclusion?
Here, there is indeed a Gap between our conclusion and our premises. The conclusion comes up with an explanation for the increase in foreign travel, seemingly out of nowhere. It makes a causal argument, claiming that "having more $$$" is the Cause and "vacationing abroad more" is the Effect. Causal arguments often present a serious Gap between conclusion and premises on the LSAT, because they are ignoring all other potential causes of an effect. For example in this case, maybe transportation is much safer than it was 30 years ago and so people are much more willing to travel abroad. Thus by claiming to know the Cause, the conclusion is assuming that there are no other possible Causes for the Effect of "vacationing abroad more".
Now that I've identified this Gap, I want to find the answer choice that addresses it. Since this a (Necessary) Assumption question, my correct answer will be something that absolutely needs to be true in order for the conclusion to make sense. I Pre-Phrase that my right answer will face the Gap - it will do something to confirm the Cause and Effect relationship between "more $$$ to spend on vacation" and "more foreign vacations". When in doubt, I can test an answer choice with the Negation Test. With that, I come down to my answers.
Answer Choice (A). Does this have to be true in order for the conclusion to make sense? No. Our premises already tell us that only a small percentage of British people travelled abroad back then. Saying that "they still wouldn't be able to travel abroad even with cheaper travel" just sort of strengthens that premise, it doesn't address the necessary Assumption that the argument makes.
Answer Choice (B). Our conclusion is only discussing British people traveling abroad. The argument does not assume anything about people from other countries. So it doesn't matter what they "would do", it has no effect on the argument.
Answer Choice (C). You're right on the money for why this is wrong; we're only concerned about foreign travel, not domestic.
Answer Choice (D). This is our correct answer. It confirms the Causal relationship between "more $$$ to spend on vacations" and "more foreign travel" that constitutes the underlying assumption of the argument. Let's check the Negation Test: "if more British people had $$$ 30 years ago to travel abroad, more would NOT have travelled abroad." That destroys the Causal relationship underlying the argument, and so the conclusion of the argument wouldn't make any sense. So (D) passes the Negation Test as well. (If you have any questions about the Negation Test, be sure to refer back to the portion of the Bibles/Course Books that discuss Assumption questions!).
Answer Choice (E). This answer choice is focused on overall wealth, but our conclusion is purely interested in the amount of money available to travel abroad. It's not a necessary assumption of the argument that overall wealthier people necessarily spend more money on travel.
Hope that helps! Please follow up below if you have any more specific questions.