Answer:
D) Monica met with Susie after she had lunch.
Step-by-step explanation:
An ambiguous pronoun is a pronoun whose reference to the antecedent remains unclear. It becomes very confusing as to which noun the pronoun is referring to. This situation is likely to occur in situations where more than one antecedent is present. In the given sentence, sentence D uses the ambiguous pronoun. In this sentence, the use of the pronoun 'she' is unclear as to which antecedent it is referring to.