The answer would be A.
The question you have to ask is, is it possessive?
Yes it is possessive.
The wing is owned by the bird. Its wing was broken.
It's means it is or it has.
It's would not make sense in this case because you can not put it is or it has into this sentence.
Answer:
It helps you focus your research so that you stay interested in it and find sources more easily
He reacted because of the gift that he had gotten her. He didnt want her to cut it off.
Teenager and young adult are you answers