Correct option is A
The correct antonym of the given word is (a)
Intensify.
Wane: To decrease in size, extent, or degree. (घटना या कम होना)
Example: Her interest in painting began to wane.
Intensify: To increase in strength, degree, or force. (तेज़ या प्रबल करना)
Example: The storm intensified during the night.
Synonyms of "wane": decline, fade, weaken.
Antonyms:
intensify, strengthen, amplify.
Meanings of other options:
· (b)
Evanesce – To disappear gradually (धीरे-धीरे गायब होना)
· (c)
Diminish – To reduce (कम करना)
· (d)
Contract – To shrink or become smaller (सिकुड़ना)