Good job Smedlin! I think you meant conditional, but it works as you describe. Just for anyone reading, let's break this one down in more detail and see if we can make it clearer
First, we have two conditional statements in the stimulus:
- Quorum Standards Begin 6
Quorum Awards Begin 7
There is no conclusion presented, and so the Must Be True question stem that follows the stimulus should be no surprise.
Note that while it appears that the two statements are unrelated, that's not the case. They both refer to the same "general assembly," which means immediately that both quorums cannot happen
because you cannot have the same meeting "start" at two different times (by definition there is only one starting time for any given meeting). If this were a Logic Game, you'd say that the two quorums cannot both occur, but that neither must occur. So, neither could have a quorum, or exactly one could have a quorum.
With the idea above, let's look at each answer choice:
Answer choice (A): While we know that both cannot have a quorum, we do not know that if one doesn't
have a quorum that the other does; perhaps there's no meeting at all.
Answer choice (B): This can be eliminated for the same reason as answer choice (A). Just because the standards committee does not have a quorum does not force the awards committee to have a quorum.
Answer choice (C): This is a Mistaken Reversal of the first sentence. It sounds attractive, but we don't know about any other meetings or reasons the general assembly might begin at 6, and there could be something else happening that causes a 6 PM assembly.
Answer choice (D): If the general assembly does not begin at 7 PM, then we know that the awards committee did not have a quorum. But, that fact does not then mean that the standards committee has a quorum (as outlined above and in (A) and (B)).
Answer choice (E): This is the correct answer.
Since the general assembly cannot start twice, there is no way for both committees to have a quorum. Thus, once the standards committee has a quorum, then the awards committee cannot have a quorum.
This is a really tricky problem because you must realize that the necessary condition refers to the same type of event happening at two different, conflicting times. That can be difficult when you are deep in the section (this is question #18) and feeling pressed for time.