an ambiguous reference means that it's vague, and it leaves the reader unsure. this often occurs when a pronounce is set after two or more subjects that it COULD apply to, but the reader isn't sure. your answer is choice 1.
I think the correct answer from the choices listed above is the second option. An ambiguous reference occurs when a pronoun refers to an unknown antecedent. It becomes ambiguous because it may refer to a man or a woman since it is not specified. Hope this answers the question. Have a nice day.
