which underlined phrase is a prepositional phrase?\ntest - takers were asked not to use their notes, books…

which underlined phrase is a prepositional phrase?\ntest - takers were asked not to use their notes, books, or calculators.\nbefore passing out the test, the teacher asked students to close their books.\nneither of the tests this week had questions about the pythagorean theorem.\nthe teacher and the students thought that the test took longer than expected.
Answer
Brief Explanations:
A prepositional phrase starts with a preposition. "Before" is a preposition in "Before passing out the test". "The teacher and the students" is a noun - phrase, and other underlined parts don't start with prepositions.
Answer:
Before passing out the test, the teacher asked students to close their books.