Identify the segment in the sentence, which contains the grammatical error.
The box of paper clips are kept in the drawer.

Correct option is A

Option (a) are kept contains the grammatical error.
• The correct verb form should agree with the singular subject "The box," thus it should be "is kept" instead of "are kept."
• Grammatical rule used: Subject-verb Agreement
This correction maintains subject-verb agreement, which is a fundamental rule in English grammar that states the verb must agree in number with its subject.
• Example: The box of paper clips is kept in the drawer, ensuring that all office supplies are organized.