It is unclear. purely because Jill or Nancy might be referred to using the pronoun she.
An example of a pronoun referencing issue?
When you use a pronoun like he or she without making it obvious to the reader who the pronoun refers to, you are making a pronoun reference error. An ambiguous pronoun, often referred to as a problematic pronoun reference, appears when a statement has two potential antecedents and the reader or listener is unsure to which one the pronoun is referring.
Pronouns take the place of nouns, i.e., a person, place, thing, or concept. They take the place of, say, students.
Readers may become confused by ambiguous pronouns. Work with specificity will help you keep readers from becoming lost in your writing.
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