A.) Their
Their sister is happy to babysit, so you mustn't worry about it.
Their is the 3rd person plural adjective. It is used to describe something or someone that belongs to them.
They're is a contraction of "they are" and it is most often followed by a present participle or a verb that ends with -ing.
Answer:
D. Description should mame the reader work hard to imagine the described scene
I do not see a passage to help
Writers use it to tell what the personality of a character is.
