Astudent rests his right ear against his desk while a teacher taps lightly on the desk. the student can hear the tapping sound only through his right ear. when he lifts his head away from the desk he hears nothing.
what is the medium of the sound waves the student hears?
a. the air
b. the desk
c. the teacher
d. the student

the desk is the answer because the sound wave is propagating through the solid bench.

answer: in linguistic analysis, a phrase is a group of words (or possibly a single word) that functions as a constituent in the syntax of a sentence, a single unit within a grammatical hierarchy. a phrase typically appears within a clause, but it is possible also for a phrase to be a clause or to contain a clause within it.

explanation: