【单选题】An unidentified wit once said, 'laugh, and the world laughs with you. Snore, and you sleep alone. ' Yet snoring is far from a laughing matter, as those unfortunates with good hearing, who are rightly ...
A.
the soft palate and other structures of the throat
B.
the inflowing and outflowing air through the nose
C.
the inflowing and outflowing air through mouth
D.
the vibrations as a result of the inflowing and outflowing air