Read the sentence. Colin has volunteered at the animal shelter at least three times. Which verb tense is underlined?

The verb phrase is “has volunteered.” It uses “has” (a present-tense helping verb) with the past participle “volunteered,” which forms the present perfect tense. The sentence describes an experience that happened at least three times up to the present, so the correct choice is present perfect.

AI-written and checked against the verified answer.