Answer: c is a compound sentence, because it is connected by but.
Explanation:
The phrase <em>the antique fire truck </em>is used as a complete subject, because you are including all of these words to form a subject, so it cannot be a simple one (just one word). It isn't a compound subject either, because that would be two or more words connected with a conjunction <em>and, </em>or some other one.
Nouns : girl, fish , team, currency, gold, foreign
adjective : other than nouns
sorry if I'm wrong
