Correct option is C
The correct synonym of the given word is (c)
Baleful.
Malign: To speak about someone in a spiteful or critical manner; also means harmful in nature. (बदनाम करना या हानिकारक)
Example: He was unfairly maligned in the media.
Baleful: Threatening harm; menacing; evil in effect. (हानिकारक या डरावना)
Example: He gave me a baleful look before walking away.
Synonyms: slander, defame, harmful, sinister.
Antonyms: praise, commend, beneficial, kind.
Meanings of the other options:
· (a)
Insurgent – one who rebels (विद्रोही)
· (b)
Nihilistic – rejecting all religious and moral principles (नास्तिक/अराजकतावादी)
· (d)
Radical – fundamental or extreme change (कट्टर/मूलभूत)