* "The snake slithered" is the main action.
* "under the bush" tells us where the snake slithered.
* "The cat meowed" is a separate action.
* "watched the show" is another separate action.
Therefore, the prepositional phrase is "under the bush".
Here's why:
* Prepositional phrase: A group of words that begins with a preposition (like "under") and ends with a noun or pronoun (like "the bush").
* Preposition: A word that shows the relationship between a noun or pronoun and another word in the sentence.
Let me know if you have any other sentences you'd like to analyze!