How are roller coaster riders similar to astronauts?
A.
Astronauts experience the thrill before a launch in ways that resemble riders' excitement on the hilltop.
B.
Riders and astronauts learn about gravity, velocity, and energy from fun activities designed by NASA.
C.
Riders experience the force of gravity in ways that resemble astronauts' experience during spaceflight.
D.
Riders and astronauts have to go through training that consists of educational and thrilling entertainment.