A Swimmer Cannot Snorkel More Than a Meter Deep Because

Multiple Choice

A swimmer cannot snorkel more than a meter deep because air

A) in the lungs cannot be easily expelled.
B) tends to liquefy in the snorkel tube.
C) is buoyed up leaving the swimmer breathless.
D) at the surface will not freely enter the higher-pressure region in the compressed lungs.
E) all of the above