First group seems fine to me, though the last one is questionable , yet I think " explanation " is close to the word " denouement " The second group is fine except #2. I would pick " hopeful " but it seems to me that is not really opposite to the word " valedictory "
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Elduende_ph5). DENOUEMENT a) denunciation b) dormancy c) termination d) explanation
I would choose "termination" as closest in meaning to "denouement"
As for the second part, I think you also got everything right except for #2
2). VALEDICTORY