Which of the following best applies to the pressure of a gas?

Question

A. It is the force per unit volume.
B. It decreases with temperature.
C. It increases with volume.
D. It is the sum of the collisions of the molecules.

Is it a or d.

Answer 1

I would rule out a; pressure is force per unit AREA and area is not volume. If the author intended a to be the answer I think s/he erred. Answer B doesn't make sense; it decreases with decreasing T but it increases with increasing T. C makes no sense either. I think D is the best answer.

Answer 2

IT is D