The students in Mrs. Taylor’s first-period class study together most weekends during the school year.
Explanation:
The subject of this sentence is "students"; the verb is "study". In the second sentence, the subject is "body". It is a singular collective noun. Even though many people make up the student body, the actual student body is one entity. It agrees with a singular verb, but the verb "have" is plural. In the third sentence, the subject is "holidays". Holidays is plural so it needs to agree with a plural verb. In the last option, "members" is a plural subject because there is more than one. It agrees with a plural verb, but "begins" is singular.
