Answer:
C) ambiguous
Step-by-step explanation:
In "Hills Like White Elephants," the references to the operation are ambiguous. The operation in question is never directly mentioned or named, and it is not clear what it entails or why it is necessary. Instead, the characters discuss the operation indirectly, using vague and evasive language to avoid mentioning it directly. For example, the man refers to the operation as "that thing," and the woman talks about "the hills" and "the station." This ambiguity serves to heighten the tension and uncertainty in the conversation, and it reflects the characters' reluctance to confront the issue directly.