A personal problem is one that only relates to ones self
I would say B: Wonderment. The mysterious but also curious descriptions create a wondrous atmosphere.
Euphemism that’s a right answer
It has no mass! Matter is something that CANNOT! have two things at the same spot at the same time. Say you are sitting in a desk at school, no matter where someone else sits, (by you, on top of you, on the desk) they are still not taking up the same space as you are. Sound though, can travel everywhere making it difficult for it to take up only one spot at a time. :)
