Synonym of BALMY

Answer: Option C

Fruitful : (of a tree, plant, or land) producing much fruit; fertile.
Tempestuous : characterized by strong and turbulent or conflicting emotion.
Soothing : having a gently calming effect.
Modest : unassuming in the estimation of one's abilities or achievements.
Balmy : characterized by pleasantly warm weather.

Synonym of Balmy is Soothing