The correct answer is A. All flags were flying.
Explanation
A complete phrase is composed of a subject, a verb, and a compliment that also expresses a completely coherent idea. According to this definition, the correct answer is A. because it has a subject "All flags", a verb "were" and a complement "flying". Also, it expresses a complete and coherent idea.
I think she will be ruled In all respects by me; nay, more, I doudt it not.
Parallel construction<span> is a balance within one or more sentences of similar phrases or clauses that have the same grammatical structure.</span>
