If "A boy is swimming underwater and bubbles are coming out of his mouth." does that mean that "A boy is swimming underwater."?
Options:
- yes
- it is not possible to tell
- no A step-by-step solution is:

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
The only way bubbles could be coming out of his mouth is by the boy swimming underwater.
The final answer: yes.