I believe they are common because people believe that is where we could be headed. Will we run society into the ground, or will we prosper? Will the society be a "Divergent" or "Giver" society or will it exist as it does today? Since we have no way of knowing, we pretend we do.
'Before they ate a snack' is the correct answer, it is the adverbial clause of time. A cannot be correct because that is an independent clause, and adverb clause has to be dependent. B isn't a clause at all.
Indecency is the correct choice here.
Hope this is helpful!
C. Friar Laurence's advice had fortified her; she does not view death as something to be afraid of.
100% positive, from a girl who took this quiz awhile ago