Final answer:
Atticus Finch asked Bob Ewell to write his name.
Step-by-step explanation:
In the novel 'To Kill a Mockingbird' by Harper Lee, Atticus Finch, the defense attorney, asked Bob Ewell to write his name in front of the jury. Atticus utilized this simple request to expose Bob Ewell's left-handedness, which was crucial in disproving his testimony.