According to Charles’s Law, the volume of a gas is directly proportional to its temperature when pressure is held constant. Therefore, when the temperature decreases, the volume of the gas also decreases.
Given the options:
- a) increases temperature
- b) increases quantity of gas
- c) increases pressure
- d) decreases temperature
- e) decreases pressure
The correct response is: d) decreases temperature, because when temperature decreases, the gas molecules have less energy and occupy less space, resulting in a decrease in volume.