Can u be more specific on what u want to exactly say to them or your main idea
I'm not quite sure how you want me to answer this but here...
'My three classes, biology, English, and reading are very hard but they are not as difficult as math.'
You do not capitalize classes unless it is a language or it as a number behind it (ex. Algebra 1.).
The answer is D since this is a biography paragraph. it tells you the story of a person’s life. hope it helps!! <3