Who threatens Scout’s first grade teacher with violence? In to kill a Mocking bird

To Kill a Mockingbird Novel by Harper Lee. The plots are based on the author's pals, family, and neighbor.

Explanation:

Scout’s first grade teacher with violence:

Miss Caroline Fisher is Scout's first-grade teacher and she is around twenty-one.Here, comes the main battle in this story is the character Atticus is a state legislative representative and he is a parent of two kids. He is assigned to represent Tom Robinson after  Bob Ewell attacks of abusing his daughter. Bob Ewell legislative representative. Then the kids of Atticus mocked their dad's decision.Finally, Boo Radley is the killer who warns scouts first standard teachers into violence. He always excites the kids' interest

C) Tragic irony.

Explanation: an irony is a state of affairs or an event that seems contrary to what one expects and it often has an amusing result. There are different kinds of irony, for example: situational irony, tragic irony, verbal irony, etc. A peripeteia is a sudden or abrupt turn of events, reversal of fortune or change in circumstances. In dramas, a peripeteia can also be called a "tragic irony," so the correct answer to this question is the corresponding to option C.