Cervantes describes a dangerous battle, but by adding the cushion as a defense agains t Quixote's weapon-a branch from an oak tree that he used to replace his broken sword from the windmill attack-we see the nature of the
entire event.
fantastic
comedic
serious
dangerous

A pronoun is used to refer to a particular antecedent only in the sentence and this antecedent should be a single noun. But when the pronoun refers to multiple antecedents and the sentence and it becomes unclear to which antecedent, this pronoun is referring to, this is called an ambiguous pronoun reference. Therefore, the correct answer is option A. May refer to two or more antecedents.