Synonym of fervor is__________?

Synonym of fervor is__________?

A. Excitement
B. Class
C. Realization
D. Swiftness

fervor:
feelings of great warmth and intensity
other Synonyms:
firing, fervency, flaming, flack, inflammation, zeal, excitement, excitation, fervour, flame, blast, fervidness, ardor, elan, flak, attack, ardour, fire