What is pressure in relation to a gas?

Question

a
the force an object exerts on a gas
b
the amount of particles bumping into each other
c
the force the gas is exerting on its container

Answer 1

The correct answer is:

c) the force the gas is exerting on its container.

In relation to a gas, pressure is defined as the force exerted by the gas particles when they collide with the walls of their container.