Topic: Subject Verb Agreement,

Best Answer Explained in Below-:

The sentence "One of the recommendation made by him was accepted" contains a grammatical error related to subject-verb agreement and plurality. The phrase "One of the" introduces a plural noun, implying that there are multiple recommendations from which one is selected. Therefore, the noun following "One of the" should also be in its plural form.

In this context, "recommendation" is incorrectly used in its singular form. The correct phrasing should be "One of the recommendations made by him was accepted," which correctly pairs the plural noun "recommendations" with the structure "One of the." This adjustment clarifies that there are several recommendations, and only one of them was accepted.

Additionally, the rest of the sentence – "made by him was accepted" – correctly follows this correction, maintaining the overall meaning that a specific recommendation was accepted after having been made by him. Thus, option B, "recommendation," is the correct choice to identify the error in the original sentence.