GLOOMY:

A. Discouraging

B. Disguising

C. Bright

D. Tragic

Answer: Option C

Solution(By Examveda Team)

Discouraging : To lose confidence or enthusiasm; depressing.
Disguising: Making something unrecognizable.
Tragic: Extreme distress or sorrow:.
Bright : Full of light, Shining.
GLOOMY: Dark or poorly lit.

Antonym of GLOOMY is Bright .