After Hannah talked to Emma, she decided to run for student council. Which revision corrects the vague pronoun error? After she talked to her, she decided to run for student council. After Hannah talked to her, she decided to run for student council. After she talked to Emma, Hannah decided to run for student council. After Hannah and Emma talked, she decided to run for student council.

Answer: The revision that corrects the vague pronoun error is "After she talked to Emma, Hannah decided to run for student council".

Explanation: A vague pronoun error is a mistake that consists in using an ambiguous pronoun. In other words, a vague pronoun error takes place when the pronoun used can make reference to different nouns; therefore, the pronoun reference is faulty, which can impede readers to understand the real meaning of a sentence. In the sentence provided, "she" is a vague pronoun error since it can refer to Hannah or to Emma. In that way, the third sentence, "After she talked to Emma, Hannah decided to run for student council", corrects the vague pronoun error since it replaces the pronoun "she" with "Hannah".

The correct answer is: C After she talked to Emma, Hannah decided to run for student council