Increasing the volume of a given amount of gas at constant temperature causes the pressure to decrease because: A. The molecules are striking a larger area with the same force
B. there are fewer molecules
C. the molecules are moving more slowly
D. there are more molecules
I know it isn't D or B but im stuck between A and C, can someone help me out?

that's what i got you can count the number of atoms

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.

it’s previous models   because when i picked that son of a gun’s answer it was wrong look for previous models because they might make it a different letter