- Mon Aug 17, 2015 6:45 pm
#19404
HI Haley,
Thanks for your question!
This is a tough game. We have three fish species to select and two plant species.
Answer choice C is incorrect because it is possible, under the rules of the game, to select both W and Z.
Let's deal with Z first. Since Z is not mentioned in any of our rules, it is essentially a random, and selecting it (as this answer choice does) does not force us to select or deselect any other variables. That means, then, that if we can also select W without breaking the rules, this answer choice would work within the restrictions of the game and would therefore be incorrect.
From the third rule, we know that J > W. However, neither J nor W (nor, remember, Z) is mentioned in any other rule. Therefore, we still have enough variables remaining to fulfill the empty spots and make this answer choice work.
We could select J, G, and L for the fish, and W and Z for the plants - which fits within the rules of the game and makes this answer choice work (and therefore be incorrect).
I hope that this answer has clarified the situation for you. Remember to focus on random variables whenever possible - in this case, L and Z, which we can throw into this permutation without restricting ourselves much.
Does that help?
