The word in caps is a predicate adjective complement. The answer to your question is D. I hope that this is the answer that you were looking for and it has helped you.
Its ether books or my room
It is a fragment. It is not a complete sentence
I believe C) describing what happens during and after a flood.
Answer:
Germany would attack France first by traveling through Belgium, and take Paris in about 3 weeks. France would surrender once Paris was taken, and then Germany would attack Russia.