What I know about pronoun antecedent agreement is that when the pronoun agrees in number (referring to singular or plural) and person (referring to first, second, or third person) with its antecedent. Pronouns should agree in number, person, and gender with their antecedents. If the antecedent is singular, the pronoun should be singular. If the antecedent is plural, the pronoun should be plural.
