Explain simply why problems is the correct answer to: What would cause someone to use invitro for reproducing?
Options:
- problems
- offspring
- overpopulation
- larger family
- baby. Explanation:

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
If there is problem in reproducing, then in vitro process is used. Invitro is useful for those who face problems in reproducing.