How does the gas propellant move when an aerosol can is used?

from a region of low pressure to a region of equally low pressure
from a region of high pressure to a region of lower pressure
from a region of low pressure to a region of higher pressure
from a region of high pressure to a region of equally high pressure

Answer;

From a region of high pressure to a region of lower pressure

Explanation;A propellant is a material that is used to move an object by applying a motive force. A gas propellant in an aerosol can is a pressurized vapor in equilibrium with its liquid. An aerosol can contains one fluid that boils below room temperature known as the propellant and another that boils at a much higher temperature known as the product.As some gas escapes to expel the payload, more liquid evaporates, maintaining an even pressure. The gas propellant moves from a region of high pressure to a region of lower pressure.