He was dismissed from service because they found him dishonest.

The correct answer is B. removed.

To dismiss someone from service means to take away their job. This can be done for a number of reasons, including dishonesty. When someone is dismissed from service, they are usually given a reason for their dismissal, and they may also be given the opportunity to appeal the decision.

The other options are not correct

• Prevented means to stop something from happening.
• Retired means to stop working because you are old enough or because you have chosen to do so.
• Stopped means to come to an end.

I hope this helps! Let me know if you have any other questions.