The diagram below shows energy being transmitted from the sun to Earth.

58478

A.
The energy is transferred as thermal radiation and light because no direct contact is needed between the sun and Earth.

B.
The energy is transferred by conduction because no direct contact is needed between the sun and Earth.

C.
The energy is transferred as thermal radiation because at times the sun and Earth are in direct contact.

D.
The energy is transferred by conduction because the sun and Earth are always in direct contact.