ummmmmm what are you trying to ask
It might be said that the correct sentences is C <span> "She is the person whom he had found sleeping in the library". This is because whom is correctly used.
In the case of A</span><span> and B, They are incorrect because instead of who it should have been whom, the correct pronoun.
On the contrary; sentence D should be who instead of whom. </span>
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).
Answer:
Don't you use Hamon's for swordsmithing? Katana Hamon or something?
Explanation: