An action verb
The word 'stroll' is a verb (to stroll) and a noun (a stroll).
Strolled is an action, so it is a verb. Strolled is the past tense of to stroll.
part of speech
The part of speech for this particular word is a noun.
The part of speech for "answer" is a noun.
adverb
what part of speech is beneath
A term that means to walk at a leisurely pace is to stroll or saunter.
The part of speech for "explicit" is an adjective.
The part of speech for "twirl" is a verb.
The part of speech for "unfamiliar" is an adjective.
The part of speech of "came" is a verb.