Choose the correct part of speech for the highlighted word in each sentence.
He walked quickly to catch the bus.

Correct option is C

The correct option is (c).

The highlighted word walked shows an action done by the subject He. It is the main action word of the sentence, so it is a verb (specifically, simple past form of walk).

Step-by-step reasoning:

• Identify what the subject does: He walked.
• The word that expresses the action is a verb.
• Quickly is an adverb modifying the verb, but the highlighted word is walked, which is the verb.

Why other options are incorrect:

• (a) Adverb modifies a verb/adjective/adverb; walked itself is not modifying anything.
• (b) Adjective modifies a noun; walked does not describe a noun.
• (d) Noun is a naming word; walked is an action.

So the correct answer is (c)