Answer :
Answer: Correct answer is C- after she talked to Emma, Hannah decided to run for student council.
Explanation:
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The revision that corrects the vague pronoun error is: After she talked to Emma, Hannah decided to run for student council.
What is a vague pronoun error?
Vague pronoun error occurs when the pronoun in a sentence is not very clear about who it is addressing.
In the revised sentence, the pronoun, she is clearer because we know that it is a reference to Hannah. So, option C is right.
Learn more about vague pronoun errors here:
https://brainly.com/question/1312721