Which of the following correctly identifies adverbs in a sentence?

The answer provides a selection of words that correctly identifies adverbs, which are words that modify verbs, adjectives, or other adverbs, typically providing information about how, when, where, or to what extent an action occurs.

In this context, "quickly," "now," and "extremely" are all adverbs. "Quickly" describes the manner in which an action is performed, indicating speed. "Now" indicates the timing of an action, specifying when it takes place. "Extremely" modifies an adjective or another adverb, indicating the degree to which something is true.

Other options include words that are not adverbs. For instance, "happy" and "blue" are adjectives, while "desk" is a noun, which do not function as adverbs in any context. Identifying the role of each word is crucial in understanding sentence structure and improving writing clarity.