It’s a
Thank you have a good day
The correct answer is c. exposition because the passage is introducing background information about events, settings, and characters. hope this helps!
So, a possessive noun is usually used to indicate who or what has something, like "The Dogs' ball."
To change this form of children,plural, to a possessive noun, you will want to add an apostrophe, and then an s. It changes to this:
Children's
Calpurnia learned to read from The Bible and a book Scout's grandfather gave her.