6624. His singing enthralled the entire audience.

✅ The correct answer is option B.
Disappointed : sad or displeased because someone or something has failed to fulfil one’s hopes or expectations.

Captivated : attract and hold the interest and attention of; charm.

Entertained : provide (someone) with amusement or enjoyment.

Surprised : feeling or showing surprise.

Enthralled : capture the fascinated attention of.

Synonym of Enthralled is Captivated