It is significant that Bob Ewell is left-handed because:
B. Because it is more likely that he beat up Mayella.
- Being left-handed can be significant in this context because when Mayella Ewell, Bob Ewell's daughter, testifies that a left-handed person assaulted her, it aligns with the fact that Bob Ewell is left-handed. This connection suggests that Bob Ewell might have been the one who beat up Mayella, making it more likely that he was the perpetrator of the violence against her.