Directions (1-6):In the following questions, a sentence is divided into four parts. Choose the part of the sentence which may contain a grammatical error in it. If all the parts of the sentence are grammatically correct and contextually meaningful, choose option “no error” as your answer choice.

One of the student (A)/ delivered an insightful analysis (B)/ in class, showing a (C)/ strong grasp of the material. (D)

The correct option/answer is A.

Step-by-step Explanation:

1. Analyze the structure: The sentence starts with the phrase "One of the...".
2. Identify the grammatical rule: The grammatical construction "one of the" must always be followed by a plural noun because it refers to a single individual or thing out of a group of multiple individuals or things.
3. Examine part (A): In part (A), "One of the student" uses the singular noun "student" instead of the plural noun "students". This is grammatically incorrect.
4. Examine the remaining parts:
- Part (B) "delivered an insightful analysis" is grammatically correct (using the past tense verb "delivered" with a singular noun phrase "an insightful analysis").
- Part (C) "in class, showing a" correctly connects the clauses using a participle clause ("showing").
- Part (D) "strong grasp of the material" correctly completes the noun phrase started in part (C).
5. Conclusion: The error lies in part (A). The correct phrase should be "One of the students". Therefore, part (A) contains the grammatical error.