The atmosphere surrounding earth to maintain the various climates, to maintain the various climates found around the world and keeps earth from becoming extremely cold. how does the atmosphere to keep earth insulated and warm?

a. the atmosphere creates heat as earth moves through space, to insulate earth.
b. the atmosphere traps the heat generated by the earth's core and maintain earth's climate.
c. the atmosphere spread the warmth from the water near the equator to other parts of the earth.
d. the atmosphere trap heat energy from the sun and energy radiated from earth to maintain the climate