C is the answer I’m pretty sure
This change in pressure is caused by changes in air density, and air density is related to temperature.
Counting atoms in a compound can be done by taking one element at a time and multiplying the subscript of the element and the number of molecules of the compounds. For example, H2O, there are two atoms of H adn 1 atom of oxygen.
Carbon tetra chloride = CCl4
calcium bromide = CaBr2
