I believe its B just cause its the character speaking and the narrator explaining what the character is doing should be spoken in a lower voice. hope it helps i tried :-:
Answer:
It would be A: People change as they grow up.
Explanation:
This is shown when they state that Marcus was the mastermind behind all the pranks and trouble at school and yet he stops his friend from committing another prank. This shows that Marcus is growing to a point where pranks might not be his thing anymore.
The answer is D, good luck
Explanation:
if by any chance I was your curious brother as you said you told him it was a boring text book so he left but if he knew it was kinda like a comic he would have been happy and excited to have a sister who shares the same interests as him that's how my lil sis is and I like her for that so give it a try I guess it's just an opinion though thanks