Correct option is B
The correct synonym of the given word is Gloomy.
Morbid: Relating to unpleasant or disturbing subjects, often associated with death or disease. (Hindi: भयानक, अस्वस्थ)
Example: His fascination with morbid tales shocked his friends.
Gloomy: Dark, sad, or depressing; often associated with a lack of hope or cheer. (Hindi: उदास, निराशाजनक)
Example: The weather was gloomy, matching her somber mood.
Synonyms: Depressing, melancholic, grim, sullen.
Antonyms: Cheerful, joyful, bright, optimistic.
Meanings of the given other options:
· Blithe: Carefree and cheerful (Hindi: प्रसन्नचित्त, लापरवाह)
· Grand: Impressive in size, scope, or appearance (Hindi: भव्य, शानदार)
· Bet: Wager or risk money on an outcome (Hindi: शर्त लगाना)