Here's why:
* Relative pronouns connect a subordinate clause (a dependent clause) to the main clause by referring back to a noun or pronoun in the main clause (the antecedent). They act as both the subject or object of the subordinate clause and relate it to the main clause.
* Examples:
* Who, whom, whose, which, that
Let's look at an example:
"The book *that* I read yesterday was fascinating."
* Antecedent: "book"
* Relative pronoun: "that"
* Subordinate clause: "that I read yesterday"
The relative pronoun "that" connects the subordinate clause to the antecedent "book", creating a connection between the two clauses.
The other options are not correct:
* Demonstrative pronouns (this, that, these, those) point to specific things.
* Indefinite pronouns (some, any, many, few) refer to nonspecific things.
* Interrogative pronouns (who, whom, whose, which, what) are used in questions.