Which process releases the energy that eventually produces lightning in a thunderstorm?

A Water droplets freeze.
B Water condenses to form clouds.
C Moisture enters the upper atmosphere.
D Air pressure decreases, causing rapid air movement.

Sara goes on a slingshot ride in an amusement park. she is strapped into a spherical ball that has a radius 3*10^2 of centimeters. what is the volume of air in the spherical ball? use this formula: volume of a sphere=4/3pi,r^3 , where r is the sphere’s radius.