I helped her solve the problem. (Passive)
She was helped solve them problem
The problem was solved by me
Her problem was solved by me
She was helped to solve the problem by me
Correct
Explanation:
Correct Answer is: She was helped to solve the problem by me
Help/See + object + infinitive/bare infinitive থাকলে passive voice এর বেলায় help/see এর জায়গায় এদের v3 form হবে এবং Help/see/teach এর পর ব্যক্তি বা বস্তু থাকলে verb এর base form বসে অথবা to + verb বসে।
structure: obj.কে sub + was + verb3 + to + verb + obj + by + sub এর objective form হয়।
সুতরাং নিয়মানুযায়ী সঠিক উত্তর – She was helped to solve the problem by me।