PT66.S3.Q19 (G4) - During a recital, two pianists

How do I tell if I need to pick all the game pieces that could fulfill the given condition, or if I need to select the answer choice that is a valid scenario? For this question (Which one of the following could be all of the solos that are traditional pieces?), I thought I needed to list all the solos that could be traditional pieces, which would be "second, third, fourth, fifth." But that wasn't an answer choice and I got extremely confused. I ended up rereading the game and all the rules a bunch of times and ran out of time for this game. For this question, I believe I simply needed to select the answer that depicts a valid game board. What is the difference between this question and a question that requires listing all possible solos that could be traditional pieces? I often cannot tell apart the wording between these two question types.

Thanks.