Fill in the blank with the most appropriate antonym of the bracketed word:
We've learned that _____________ (calmness) spreads faster online than joy.

The correct answer is (a) rage.
Explanation:
The antonym of "calmness" is "rage," which means extreme anger. The other options do not convey the opposite meaning of "calmness."
Meanings of all options:
· Rage: Violent, uncontrollable anger.
· Sweetness: The quality of being pleasant or kind.
· Cumbersome: Something that is difficult to handle because of its size or complexity.
· Calamity: a terrible event that causes a lot of damage or harm.