First person. As if you were the one telling it.
The caged bird singswith a joyous songof the captive life that kept it safe all along.This answer exemplifies the two birds: free and caged. Free in such a way that it is able to sing a song of its choice, and caged, because even if it is in captive it has something to be thankful for, its safety.
I think that it would be A- direct your research, but since I do not know the context of you question.
The correct answer would be, A word, phrase, or clausethat seems to refer to or modify an unintended word because of its placement in a sentence.
C is the correct answer i hope