The atmospheres of the planets in our solar system differ in their physical compositions. Which planet would you expect to have the thickest atmosphere?

Question

a planet with a hot atmosphere and strong gravity
a planet with a cold atmosphere and strong gravity
a planet with a cold atmosphere and weak gravity
a planet with a hot atmosphere and weak gravity
I think D.

Answer 1

I agree, low density gas due to high temp and low compressing gravitational force.

Answer 2

Thank you very much that really helped