Each question is divided into four parts where one of the parts may or may not contain an error. Choose the partthat has the error as your answer. If allthe parts are correct choose

“No Error”.

Despite the team's efforts (A)/ to find flaws, they couldn't identify (B)/ no flaws in the project, (C)/ making it a remarkable success. (D)

To identify the part of the sentence containing the grammatical error, let us analyze the sentence structure step-by-step:

Given sentence:
"Despite the team's efforts (A)/ to find flaws, they couldn't identify (B)/ no flaws in the project, (C)/ making it a remarkable success. (D)"

1. Part (A): "Despite the team's efforts"
This prepositional phrase is grammatically correct. "Despite" is correctly used to show contrast, followed by the noun phrase "the team's efforts".

2. Part (B): "to find flaws, they couldn't identify"
This part is also grammatically correct. The infinitive verb "to find" correctly modifies "efforts", and the subject-verb combination "they couldn't identify" (they could not identify) is standard.

3. Part (C): "no flaws in the project,"
This part contains a double negative error. The clause in Part (B) ends with "couldn't" (could not), which is already a negative contraction. Combining it with "no flaws" in Part (C) creates a double negative ("could not identify no flaws"). In English grammar, double negatives cancel each other out, which incorrectly changes the intended meaning of the sentence. To make the sentence grammatically correct, the negative determiner "no" should be replaced with "any" to read: "they couldn't identify any flaws".

4. Part (D): "making it a remarkable success."
This participial phrase correctly describes the result of the action and contains no grammatical errors.

Therefore, the error lies in Part (C).