Answer:
The underlined words in this excerpt are an example of a prepositional phrase
Step-by-step explanation:
Prepositional phrases are constructed with a preposition a noun and different words that can modify that noun, for there were stars out is a sentence that starts with a preposition and follows the structure to create a prepositional clause, in this case, it is modifying the place where the snow is falling in the first part of the sentence.