Final answer:
The correct answer is B) Dispirited and disappointed. Being crestfallen means feeling sad due to a setback or disappointment.
Step-by-step explanation:
If someone is feeling "Crestfallen," they are most likely dispirited and disappointed. This word is used to describe a feeling of sadness or depression after experiencing a setback or disappointment.
It is the opposite of feeling full of energy and enthusiasm, which would make option B the correct answer. Being crestfallen has nothing to do with being highly successful or overconfident, which are options C and D, respectively.