Identify the most appropriate ANTONYM of the highlighted word in the given sentence.
A balloon contracts when air is blown into it.

Correct option is B

The correct antonym of the given word is (b) Expands.
Contracts: To become smaller or tighter (सिकुड़ना, संकुचित होना)
Example: Metal contracts when it cools.
Expands: To become larger in size or volume (फैलना, विस्तार होना)
Example: A balloon expands as more air is pumped into it.
Synonyms: Shrinks, compresses, tightens
Antonyms: Expands, stretches, inflates, enlarges
Meanings of all the other options:
·  (a) Repulses – Pushes away or causes dislike (घृणा करना)
·  (c) Controls – To manage or regulate (नियंत्रण करना)
·  (d) Shrinks – Becomes smaller (सिकुड़ना) – This is a synonym, not an antonym