The answer is A, because the protagonist is the main character, and that's what Rider is. The other answers don't really make sense in terms of the role he plays in the story.
Hope I helped!
Answer:
She was 6 yrs old when she realized she was not white.
Explanation:
She was different at school, taunted by the other girls who envy her clothing, her complexion, and her extraordinary hair. Nobody give Janie a chance to be friendly, Janie makes no friends at school.