Why A?

Hi Marissa, thanks for the question. This passage uses a combination of sufficient/necessary and quantifier statements. The premises combine to be: T -some- GP -> NOT Poison Fang It concludes: T -some- NOT Poison Fang The argument is good and we need to find the answer choice that uses the same reasoning. Answer choice A: Collection -some- RM PbyS -> Not RM ( RM -> NOT PbyS) Which gives us: Collection -some- RM -> NOT PbyS This is the conclusion of the argument. Some of the poems in the collection were not PbyS. This is the exact parallel of the passage. I hope this helps. Please let me know if you have any other questions.