Question

The dry cactus quickly absorbed enough water. Which word in the sentence is an adverb?

Answer 1

Since an adverb is a word that modifies a verb, we know that the adverb is: Quickly.  The verb is absorbed and the adverb, quickly, tells us how the cactus absorbed the water.  I hope that answers your question.

Answer 2

Salutations!

The dry cactus quickly absorbed enough water. Which word in the sentence is an adverb?

Adverb means modifying the manner of the verb. It describes how the manner of the verb is. In the sentence, quickly is an adverb. It describes how the cactus absorbs the water.

Hope I helped (:

Have a great day!