Which situation is the BEST example of inertia?
A. You go down a steep roller coaster and it feels like your stomach is going up into your throat
B. A rocket thrusts it’s booster and lifts off the launching pad
C. An old lady uses a walker and is able to cross the street
D. A rock is thrown vertically up in the air and it falls back to the earth

WILL MARK BRAINLIEST!!