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.
The two poems, “Tepeyac” and “Marian Anderson: Famous Concert Singer” have in common on how they are written. The two poems are written in a simple manner, in such a way that, it easily understood by the readers since it has a direct style. Both poems too, have no characters.
<span>it might be said that the most important insight Momaday gained about his heritage during his pilgrimage from Yellowstone to his mother´s grave was the sadness that his grandmother expressed in her Kiowa prayers were about sadness and the sense of lost</span>