3. Why is Sheriff Tate so adamant that Bob Ewell fell on his knife?

To protect Boo's privacy, Heck Tate insists that Bob Ewell's death be reported as accidental; they will say that Ewell fell on his own knife. It could be said that Bob Ewell's death was his own fault, since he died in an attempt to attack children.

Explanation:

the answer is a).

being ignored by someone and then accepting the fact was really tough