The correct answer is: (b) Sulk. Gambol means to run or jump about playfully, to frolic.
- (a) Frolic → Similar meaning (synonym)
- (b) Sulk → To be silent, gloomy, bad-tempered
- (c) Amble → To walk slowly and casually
- (d) Stroll → To walk in a relaxed wayAs "gambol" has a happy, joyful, and playful meaning, the opposite of "gambol" is "sulk," which has a sad, gloomy, bad-tempered, etc., meaning.