Antonym of ZEAL

Answer: Option C

Zeal : great energy or enthusiasm in pursuit of a cause or an objective.
Hostility : hostile behaviour; unfriendliness or opposition.
Diffidence : modesty or shyness resulting from a lack of self-confidence.
Apathy : lack of interest, enthusiasm, or concern.
Contempt : the feeling that a person or a thing is worthless or beneath consideration.

Antonym of Zeal is Apathy