Loosened rocks may tumble down canyons when it is raining heavily.
which word in the sentence is a participle?
loosened
down
tumble
raining

Loosened.

Explanation:

Participles are words that are formed from a verb, but acting as a noun or adjective in the sentence. They are used in sentences to modify the verbs or nouns, or the noun/verb phrases.

Loosened rocks may tumble down canyons when it is raining heavily

In the above sentence, "loosened" is a verb in itself but when put along with a noun "rocks", it acts as an adjective. So, it becomes the participle in the sentence. It changes the nature of the noun "rocks".

in this passage from chapter 6 of "animal farm", by george orwell, what the author is ridiculing in this passage is the frivolity of some rules.

clover, the mare, believes she remembers that the fourth commandment forbade sleeping in beds because it was something that humans did. snowball, napoleon, and the pigs are brain-workers who look after the welfare of the farm. they are the obvious leaders because they are smart, and so they are entitled to eat the best food and sleep in beds. it is squealer, who says these lines making the difference between sleeping with sheets, what humans do, and sleeping in beds, what pigs do. the unwillingness to question authority makes the oppressed to obey without thinking.