Select the most appropriate ANTONYM of the highlighted word in the given sentence.
The loyal nature of the princess was one of the reasons that the king trusted her very much.

Correct option is B

The correct antonym of the given word is (b) treacherous.
Loyal: Showing firm and constant support or allegiance to a person or institution. (वफादार, निष्ठावान)
Example: The dog remained loyal to its master till the end.
Treacherous: Disloyal, deceitful, or likely to betray trust. (विश्वासघाती, धोखेबाज़)
Example: He was punished for his treacherous actions against his country.
Synonyms: faithful, devoted, dependable.
Antonyms: disloyal, treacherous, untrustworthy.
Other options:
· (a) Infamous: Well known for something bad (कुख्यात)
· (c) Livid: Extremely angry (क्रोधित)
· (d) Unyielding: Not giving way under pressure (अडिग)