Final answer:
The best example of a situation that would lead to disillusionment is when you have plans to see your favorite group in concert, but it ends up being really bad.
Step-by-step explanation:
The best example of a situation that would lead to disillusionment is C- You have plans to see your favorite group in concert, but it ends up being really bad. Disillusionment is the feeling of disappointment or dissatisfaction when something does not meet our expectations. In this example, the person had high hopes for the concert, but it turns out to be a letdown, causing them to feel disillusioned.