|A) That is my books bag||B) Some boys are coming for tution|
|C) The girl, whom you have met yesterday is my sister||D) Those are not your things|
Here in the given options, The girl, whom you have met yesterday is my sister is the sentence which has relative pronoun.
The pronoun which is used to connect a clause or phrase to a noun or pronoun is called as relative pronoun.
The most common relative pronouns are who, whom, whose, which, and that. Sometimes when and where can also be used as relative pronouns.