It would help if you would write down the answer choices but your in lucky because i just finished a test with this question in it and its the first answer.
The answer is C. Because, internal means "inside" and the boy thought that he was evil, he THOUGHT it, it was on the inside. A,B,D are examples of EXternal conflict. Think of it this way: INternal = INside.
Hope it helped. ^-^
