The correct answer is letter D.
Explanation: The narrator of the The Adventures of Huckleberry Finn is Huck Finn, he and Tom Sawyer are close friends. He is easily influenced by his best friend.
Tom Sawyer had an incredible amount of emotional influence over Huck. Tom represents the civilized society, that Huck leave behind.
Following rules of behavior to help maintain order is part of social control - b.
Having social control in any society helps it be maintained and properly functioning which in contrast to not having such social rules of behavior where the workflow of such a society wouldn't go as planned.