Q: Which of these sentences doesn't make sense?
Options:
- Sentence A: "when somebody is sad, he will cry"
- Sentence B: "when somebody is sad ,he will laugh"

Let's solve this gradually.

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Laughing is a sign of joy, therefore if somebody is sad, he would not laugh. The answer is Sentence B.