which sentence includes a prepositional phrase?

1. Monday is the last day to sign up.
2. The test was moved to Wednesday.
3. I will try to memorize the poem.
4. The cat is swishing its tail.

4. The cat is swishing its tail.

The sentence that includes a prepositional phrase is: "The cat is swishing its tail."

The sentence that includes a prepositional phrase is: "The cat is swishing its tail."

To identify a prepositional phrase, you need to locate a preposition and its object. In this sentence, the prepositional phrase "is swishing its tail" starts with the preposition "is" and its object "tail."