Which is not driven by energy from the sun ?

Of the following;

a-erosion

b-volcanic eruption

c-ocean circulation

d-climate

The answer is; B

A volcanic eruption is caused by the energy deep in the earth. The heat from the heats up the ricks into magma  that ascends up into the crust through vents and erupts. The differential heating of the earth by the sun is significant in driving ocean circulations and climate too. The uneven heating of rocks causes the rocks to weather.

a "theory" a suggestion that is not 100 % accurate, or a figure. some people say its a theory because they of all the passed theory's about one subject. it depends sometimes theory might be accurate and sometimes they are.