Which of these sentences doesn't make sense?
Options:
- Sentence A: "If you run a red light while driving, a cop could pull you over."
- Sentence B: "If you run across the street without slapping the mailbox first, a grizzly bear will eat you."

Hmmm, let me think. I want to lay out the solution in details.
Slapping mailboxes has nothing to do with your chances of encountering, or getting eaten by, a grizzly bear. The answer is Sentence B.