choose the sentence in which preposition is used correctly.

Persist, excel, assist, succeed, indulge, right/correct, mistake ইত্যাদি শব্দের পর সাধারণত in + Gerund (Verb + ing) বসে। যেমন -
- I succeeded in solving the problem.
- The boy excels in learning English.
- None should indulge in gambling.
- He was mistaken in thinking so.