Read the sentence. Loosened rocks may tumble down canyons when it is raining heavily. Which word in the sentence is a participle? tumble loosened raining down
The correct answer to the question stated above is the third option which is "loosened".
Loosened rocks may tumble down canyons when it is raining heavily. In this sentence, the word "loosened" is the participle. It is specifically a past participle.