Answer:
Clothes
Explanation:
An antecedent is a word, phrase or clause that a pronoun refers to. Therefore, a pronoun and its antecedent must agree in person (first, second, or third person) and in number (plural or singular).
In the sentence, the demonstrative pronoun "those", which is third-person plural, is referring to the noun "clothes", which it's third-person plural too.
