Final answer:
Tom makes the mistake of confessing that he did not see Mayella Ewell actually hit him in the courtroom, which undermines his defense and turns the community against him.
Step-by-step explanation:
In the courtroom, Tom makes the mistake of confessing that he did not see Mayella Ewell actually hit him. This admission undermines Tom's defense as his case heavily relies on the fact that he is innocent of assaulting Mayella.
By admitting that he did not see Mayella hit him, Tom provides an opening for the prosecutor to argue that Tom is lying and further cast doubt on his credibility. This mistake turns the community against Tom as they now have reason to question his innocence.
The complete question is:What mitake does Tom make in the courtroom to turn the community against him?