Why D can't be the correct answer?

@Valerie it is important to note that there is only one right answer on every LSAT question. There is no such thing as the "best answer" on the LSAT. With that in mind, let's take a look at why (D) is incorrect. Let's diagram the set of facts: "While only some recent university graduates consider work environment an important factor in choosing a job," P1: UG-some-WEIF WEIF-some-UG "they all consider salary an important factor." P2: UG ==> SIF not SIF ==> not UG "Further, whereas the only workers who consider stress level an important factor in choosing a job are a few veteran employees," P3: VE-some-SLIF SLIF-some-VE "every recent university graduate considers vacation policy an important factor." P4: UG ==> VPIF notVPIF ==> not UG We are looking for the answer choice that "must be true" so the correct answer will be 100% supported by these facts. (D) states, "All people who consider vacation policy an important factor in choosing a job also consider salary an important factor." There is no need to even diagram this as the stimulus was about "recent university graduates." (D) is far too broad as it says "all people." Therefore, (D) is not necessarily true and (D) would be eliminated. Hope that helps! Please let us know if you have any other questions.

I did not need to diagram D to immediately eliminate it. We know it is wrong because it says "all" and we do not have such a broad group of people to consider according to the statements we have been given for this condition.

Answer Choice C says at least some which correlates to the Veteran employees in that it says "few" veteran = "at least some". Can you tell me why C is wrong?