Question

select the antecedent of the pronoun her. i saw my favorite actress on the subway yesterday. i decided to say hello and asked her for an autograph.

Explanation:

The antecedent of a pronoun is the noun it refers to. In the sentence, "her" is a pronoun. We look for the noun that "her" is replacing. The noun "actress" is female - singular, and "her" is used to refer back to "actress".

Answer:

actress