Question

Use a relative pronoun
This is the boy____ won the race.

Answer 1

Hint: A relative pronoun is one that appears at the beginning of an adjective clause. "That," "which," "who," "whom," and "whose" are relative pronouns.
The dog that stole the cookie is back. (In this sentence, 'That' is the relative pronoun.) 'Stole the cookie' is the adjective clause.)

Complete answer:
A relative pronoun is a pronoun that indicates that a clause is relative. Its function is to enter modifying knowledge about an antecedent referent.

The word that in the sentence "This is the house that Rohan designed" is an example. The relative clause "Rohan designed," which modifies the noun house in the main sentence, is joined here by the relative pronoun. That has an anaphoric relationship with the main clause's antecedent "house."
The most common relative pronouns in the English language are which, that, whose, whoever, whomever, who, and whom.

The pronouns who and who are also relative pronouns. However, to indicate who is doing what, who is used as the subject of a sentence or clause (like he or she), The boy is winning the race in the sentence given in the above question. As a result, the term "who" is fitting.

Hence, the correct sentence is: This is the boy who won the race.

Note: Always remember that you have to:
- Use Who, What, Whose, Whom, and Whomever when referring to an individual.
- Use Which, That, What Whatever, and Whichever to refer to a thing, location, or idea.