Narrator and author. The guide and spiritual leader is Virgil
B Sister's because it shows ownership with the apostrophe s
At the beginning of the story, Mathilde was a charming young woman who daydreamed about a luxurious life. She was married to a minor clerk. The narrator mentioned that she dressed plainly because she could not afford fine clothes. She grieved incessantly, and believed that she was born to enjoy the luxuries of living.
I'm pretty sure the correct answer is C) As a theme that helps readers understand human experience. Hope this helps.
A) her childhood,
because it involves her youth and experiences with family