What is going to happen to the volume of a gas that is put under MORE pressure while keeping the temperature constant?

A) The volume will increase. B) The volume will decrease. C) The volume will fluctuate. D) The volume will remain constant.

The answer is - B

if temperature and pressure are constant, the number of particles is proportional to the volume. Another way to keep the pressure constant as the volume increases is to raise the average force that each particle exerts on the surface. This happens when the temperature is increased.

B, The volume will decrease.