The correct answer is a) Possessive. Pronouns are the words used in place of a noun. The noun to be replaced can be the name of a person, place, animal, or thing. According to English grammar, a pronoun cannot be used until and unless a noun has been mentioned or used beforehand. Pronouns that stand to show possession or ownership of someone over something are known as possessive pronouns. In the given statement, ‘Rahul told me to use his new phone.’ the pronoun ‘his’ shows that the new phone belongs to Rahul.