Crestfallen he returned as he had never faced such humiliation in the whole of his life.

Answer: Option C

Crestfallen : sad and disappointed.
Disturbed : having had the normal pattern or functioning disrupted.
Vainglorious : excessively proud of oneself or one's achievements; overly vain.
Triumphant : having won a battle or contest; victorious.
Indignant : feeling or showing anger or annoyance at what is perceived as unfair treatment.

Antonym of Crestfallen is Triumphant