Grammar Quiz: Choosing the Correct Pronoun

C. own

This question tests your understanding of possessive pronouns. The correct answer is 'own' because it modifies the noun 'trousers'. Here's why:

• 'Own' is a possessive adjective, indicating that the trousers belong to him.
• 'Ones' is a plural pronoun and doesn't fit the context of a single pair of trousers.
• 'Own one' and 'own ones' would be redundant as they are already implied by the context.