Identify the correct sentence.

A. Fighting on school grounds are a serious offence.
B.
Harry Potter and the Chamber of Secrets are a good movie.

C.
Harry Potter and the Chamber of Secrets is a good movie.

D. A new Boys and Girls Club are keeping many children off the streets.

C

C. is right.

C

is the correct sentence.

C. Harry Potter and the Chamber of Secrets is a good movie.

The correct sentence is option C: "Harry Potter and the Chamber of Secrets is a good movie."

To identify the correct sentence, we need to look at subject-verb agreement. In sentence A, "Fighting on school grounds" is the subject, but the verb "are" is plural, which does not agree with the singular subject. Therefore, sentence A is incorrect.

In sentence B, "Harry Potter and the Chamber of Secrets" is the subject, but the verb "are" is plural, which also does not agree with the singular subject. Therefore, sentence B is incorrect.

In sentence C, "Harry Potter and the Chamber of Secrets" is the subject, and the verb "is" is singular, which agrees with the singular subject. Therefore, sentence C is correct.

In sentence D, "A new Boys and Girls Club" is the subject, and the verb "are" is plural, which does not agree with the singular subject. Therefore, sentence D is incorrect.

Hence, the correct sentence is C: "Harry Potter and the Chamber of Secrets is a good movie."