Answer:
The correct answer is D. "You plan to ask someone out on a date but find out he or she is dating someone else".
Step-by-step explanation:
Disillusionment is a feeling of disappointment that comes when something does not meet the expectations that the person had beforehand. When a person is planning to ask someone else on a date, she or he expects that the other person is available and it would agree to go on a date. Finding that the other person is dating someone else would not meet the expectations, therefore it would led to a feeling of disappointment.