The effects of weightlessness on astronauts. Which sentence could function as a coherent thesis for this paper?
A
The correct term for the word "weightlessness" is actually "microgravity. "
B
Weightlessness might look like fun, but it puts a great demand on the body of an astronaut.
C
Some astronauts have reported that they experience nausea during weightlessness.
D
Weightlessness feels a lot like it does to jump out of an airplane before the parachute opens.
