The error in the sentence, 'One of the recommendation made by him was accepted' is -

Of the এরপর 'noun' টি Plural হয়। Recommendation না হয়ে Recommendations হবে যার অর্থ সুপারিশ সমূহ যা Plural. বাক্যের অর্থঃ তার কর্তৃক তৈরিকৃত সুপারিশ সমূহের মধ্যে থেকে একটি গৃহীত হয়েছে।

The error in the sentence "One of the recommendation made by him was accepted" lies in the phrase:
👉 "recommendation"

✅ Correct form:

"One of the recommendations made by him was accepted."

Explanation:

The phrase "one of the..." is always followed by a plural noun because it refers to one out of many.

Therefore, "recommendation" should be "recommendations" (plural).

Corrected Sentence:

"One of the recommendations made by him was accepted."

✅ Answer: recommendation (this is the part with the error)