Answer: The correct answer is ambiguity.
Explanation:
Ambiguity in social studies refers to doubts or obscurities in interpersonal or intrapersonal situations.
 In this situation, Irwin and Wenshu are a multiracial couple, Multiracial couples often have different cultural norms and preferences. For instance, in this scenario, Wenshu wants to spend their vacation with family while Irwin would like to take a trip to a place they've never been before. This indicates that Wenshu might be from a collectivist culture, while Irwin is from an individualistic culture.  In this way, even though Irwin and Wenshu haven't argued, Irwin is confused about how to resolve their different desires, thus displaying ambiguity.