Select the most appropriate ANTONYM of the bracketed word to fill in the blank.
The medicine was so _______ (sweet) that a man had to choose sugar along with it.

Correct option is B

The correct antonym of the given word is (b) sour.
Sweet: Having a pleasant taste characteristic of sugar or honey. (मीठा)
Example: The juice was very sweet and refreshing.
Sour: Having an acidic taste; the opposite of sweet. (खट्टा)
Example: The milk turned sour after being left outside overnight.
Synonyms of sweet: sugary, saccharine, honeyed, luscious
Antonyms of sweet: sour, bitter, tart, acrid
Meanings of the other given options:
· Rancid – smelling or tasting unpleasant as a result of being old and stale. (बासी / सड़ा हुआ)
· Stale – no longer fresh. (बासी)
· Fetid – smelling extremely unpleasant. (सड़ा हुआ / दुर्गंधयुक्त)
Only sour represents a direct opposite in taste to sweet.