What is the main energy source that drives global climate?
a. solar
b. wind
c. mechanical
d. heat

a. solar

Explanation:

Solar energy is the energy that reaches the Earth's surface through the sun, as the name says. This energy influences the climate of the entire planet, because it determines warmer or colder climates in relation to the position of the sun and how this energy arrives with more intensity. This is because the places that have warmer climates are regions where the incidence of solar energy is stronger and more prominent, while the regions with a colder and milder climate are regions where the incidence of sunlight is less.

a solar

answer; (d) spontaneous processes are characterized by the overall conversion of order to disorder;