Correct Answer:
C. Puzzled
The idiom "at sea" means confused or bewildered, making "Puzzled" the closest meaning. "Sad," "Happy," and "Triumphant" describe different emotional states, not a state of confusion or uncertainty.
The idiom "at sea" means confused or bewildered, making "Puzzled" the closest meaning. "Sad," "Happy," and "Triumphant" describe different emotional states, not a state of confusion or uncertainty.