D would be the only example of a character study. None of the other options examine a specific character and D goes into depth researching Harry Potter as a character. I hope this helps!
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
He discovers how to animate lifeless matter.