which sentence includes a participle phrase?

1. Would you help our planning the trip?
2. I looked in the closet for my sweater.
3. I would like to go to the new mountain resort.
4. Staring down the mountain, Jack was excited for a day of skiing.

4. Staring down the mountain, Jack was excited for a day of skiing.

The sentence that includes a participle phrase is: "Staring down the mountain, Jack was excited for a day of skiing."

The sentence that includes a participle phrase is sentence number 4: "Staring down the mountain, Jack was excited for a day of skiing."

To identify the participle phrase in this sentence, you can look for a verb that ends in "-ing" that is used as an adjective. In this case, the verb "staring" functions as a present participle and modifies the noun "Jack." The phrase "staring down the mountain" describes Jack's action or state of being, making it a participle phrase.

Note: A participle phrase is a group of words that includes a participle and functions as an adjective in a sentence. Participles are verb forms that end in "-ing" (present participle) or "-ed" or irregular forms (past participle).