The word <em>quickly </em>describes the verb, or the way in which the line is moving. This means that this word is an B. adverb.
A would be - is long, is moving
C would be - long
There are no prepositions here.
Answer:
The sisters would be antagonist and foil
If you write them down as soon as you come up with the idea you will most likely remember everything you thought of. If you say it first then write it you will most likely forget a few things in your idea who could have been important for everything to go as planned in your head.