Explanations:In English grammar, pronouns must agree with their antecedents in number and person. The antecedent in this sentence is "my grandparents," which is a plural subject. Therefore, the pronoun used to refer to "my grandparents" must also be plural. The correct pronoun to use in this context is "they," which is a plural subject pronoun.
The sentence "My grandparents live in Mumbai..... visit us often" requires a subject pronoun to agree with "my grandparents." The pronoun "they" is the correct choice because it is plural and can function as the subject of the sentence. The other options are incorrect for the following reasons:
"Them" is the object form of the pronoun and cannot be used as the subject of the sentence. It is used when the pronoun is the object of a verb or preposition, such as in the sentence "I visit them often."
"Their" is the possessive form of the pronoun and does not function as a subject in the sentence. It is used to show possession, such as in the sentence "Their house is in Mumbai."
"He" is a singular pronoun and does not agree with the plural subject "my grandparents." It is used when referring to a single male individual, such as in the sentence "He lives in Mumbai."
Understanding the correct usage of pronouns is essential for maintaining grammatical accuracy and coherence in sentences. It is important to ensure that the pronoun used agrees with its antecedent in number and person to avoid confusion and maintain clarity in communication.