Which poem?
You need to include more of your question or the part of the poem that talks of this part!
The answer would be C, "actors", because it describes the subject "we" more thoroughly, and that is actually the function of the appositive within a sentence. "Committee" is an indirect object, "we" is a subject, and "award" is a direct object.
Answer: The answers are D. Splendid Display and B. Without Memorial
Explanation: Hope it helps