Question

1. how does the suns energy primarily reach earths surface? through direct physical contact by molecular collision via electromagnetic radiation through atmospheric pressure changes

Explanation:

The space between the Sun and Earth is mostly a vacuum. Heat transfer in a vacuum occurs through electromagnetic radiation, such as visible - light, infrared, etc. Direct physical contact is not possible as they are not in contact. Molecular collision requires a medium and there is no continuous medium between the Sun and Earth. Atmospheric pressure changes are not related to the transfer of the Sun's energy to Earth.

Answer:

C. Via electromagnetic radiation