Identify the method used to correct the ambiguous pronoun reference. if the revised sentence does not improve the pronoun reference, choose "no improvement was made." original sentence: the dishes were piled on the table that needed washing. revised sentence: the dishes that were piled on the table needed washing. the antecedent was repeated. the pronoun was placed nearer the antecedent. the sentence was rewritten. an intensive pronoun was inserted after the ambiguous pronoun. no improvement was made.

The original sentence used the pronoun in a wrong way - the way that sentence is written, it would seem that the table needed washing, and not the dishes. The revised sentence fixes this mistake by placing the pronoun nearer the antecedent.
An antecedent is a word or a phrase which is located in front of the pronoun (ante means before) and which that pronoun refers to. The pronoun here is 'that,' and its antecedent is 'the dishes.' So by moving the pronoun 'that' nearer the antecedent 'the dishes' we fixed the ambiguous sentence.