The correct answer is: C. whose
The sentence is about Javed, and it tells us that two of his brothers attend primary school. We are asked to fill in the blank with a word that refers to Javed’s brothers. The answer must be a pronoun that can be used to refer to people, and it must agree with the number of brothers (two). Of the four options, only “whose” is a pronoun that can be used to refer to people, and it agrees with the number of brothers (two).
The other options are incorrect because they are not pronouns, or they do not agree with the number of brothers.
- A. whom is a pronoun that can be used to refer to people, but it does not agree with the number of brothers (two).
- B. them is a pronoun that can be used to refer to people, but it is not the correct case. The correct case is “whose.”
- D. which is not a pronoun. It is a relative pronoun, which is used to introduce a clause that provides additional information about a noun or pronoun. In this sentence, we do not need to provide additional information about Javed’s brothers, so “which” is not the correct answer.