Because a memoir has a literary value, the person writing a memoir doesn't have the intention to present every historical even in the exact same way it happened. A memoir actually represents the writer's memories, his own experience, it is not written by a historian with a view to being published as a history book, but rather as a work of fiction.
You didn't italize or mark the phrase, but I see one good candidate:
"The circus animal trainer" is in a way another name given to Mervin, a kind of "renaming" him: this is called an appositive phrase, so if this was the phrase appositive phrase is the answer! (also, I don't see the other phrases here).
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“I would really like to be put back into credit recovery, Can you please help get me back in?”
<span>D.) Piers Plowman
is the answer</span>
