【单选题】Do you ever feel sick, confused, or very tired after a long plane ride? If you were fly-ing east to west or west to east, the problem could have been jet lag. (45) Jet lag happens when your body's tim...
A.
The tired and confused feeling that you get after flying.
B.
Being unable to catch the plane.
C.
Being too heavy to be on the plane.
D.
Losing the clock in your body.