Each question is divided into four parts where one of the parts may or may not contain an error. Choose the part that has the error as your answer. If all the parts are correct choose “No Error”.

Sarah is considered one of (A)/ the top researcher in the field (B)/ of neuroscience due to (C)/ her groundbreaking discoveries. (D)

The correct answer is Option B.

Step-by-step Explanation:

1. Analyze the Grammatical Structure:
The sentence uses the construction "one of the" followed by a noun phrase to indicate a single member of a group. Under standard grammatical rules, the phrase "one of the" must always be followed by a plural noun, because you are selecting one individual out of a group of multiple entities.

2. Identify the Error in Part (B):
In part (B), the phrase reads "the top researcher". Here, "researcher" is a singular noun. To make the sentence grammatically correct, "researcher" must be pluralized to "researchers".

3. Corrected Sentence:
"Sarah is considered one of the top researchers in the field of neuroscience due to her groundbreaking discoveries."

Therefore, the error lies in part (B).