Which among the following sentences contains a demonstrative pronoun?
 

The correct option is D) ‘Those vegetables are overcooked’. The words that are used in place of a noun are pronouns.  The name of a person, place, animal, or item can be the noun that is replaced. Pronouns that stand to act as pointers are known as demonstrative pronouns. In the given statement, ‘Those vegetables are overcooked’,  the pronoun ‘those’ is a plural demonstrative pronoun. In the other three options no demonstrative pronoun such as that, this, these, etc. can be observed; hence making option (D) the required answer.