Answer:
<h2>1.) not using a pronoun at all.</h2>
Explanation:
Not using a pronoun is the right way to correct this ambiguity.
An ambiguous pronoun happens when a pronouns have an unclear antecedent, such that it's not clear who is referring to.
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<em>For example:</em>
<em>My cousin and his brother are about to take the bus, he's late to school and </em><em>he </em><em>has to meet his girlfriend. </em>(In this case, the second pronoun is not clear, we don't who is referring to).
We can fix this ambiguity without using pronouns in the second time:
<em>My cousin and his brother are about to take the bus, he's late to school and </em><em>his brother </em><em>has to meet his girlfriend.</em>