Correct Answer:
C. Excited and ecstatic
The correct answer is Excited and ecstatic. The idiom "on cloud nine" is used to describe a state of extreme happiness, joy, or excitement. It means feeling wonderful, elated, or thrilled. Among the options:
- Angry: This is an opposite emotion.
- Sad: Also an opposite.
- Excited and ecstatic: This perfectly matches the meaning of being on cloud nine.
- Confused: This is unrelated to the idiom's meaning.
Therefore, the correct meaning is "Excited and ecstatic".