In narrative writing in your writing in first person mode so you have to start your sentences with I.
try writing as many vivid details as possible.
Use dialogue by can help you engage with the reader and add some realism to it.
it's important to weave your emotions so you can engage The reader.
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.