Many of the driving forces of weathering depend on changes in
a. acidity
b. salinity
c. pressure
d. temperature

D. Temperature

measures the heat content of a material or an area.

Heat in Physics is an energy that is in a process of transfer between a system and its surroundings other than the transfer of matter. In  Thermodynamics,  a science that deals with the study of heat and temperature and their relationship to energy and work, finer details of the process is unpredictable. Heat flows from a hotter to a colder body when there is a physical pathway. This pathway is suitable and can be direct such as radiation and conduction. It can also be indirect as in convective circulation.

The soviet union beat the us to the first successful launch, with the october 4, 1957, orbiting of sputnik 1, and later beat the us to have the first human in earth orbit, yuri gagarin, on april 12, 1961. the "race" peaked with the july 20, 1969, us landing of the first humans on the moon with apollo 11