Question

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

Explanation:

The Sun's energy travels through the near - vacuum of space to Earth. Since there are few particles in space for conduction or convection, it travels as electromagnetic radiation which can move through a vacuum. Atmospheric pressure changes and molecular collisions are not the primary ways for the Sun's energy to reach Earth, and there is no direct physical contact between the Sun and Earth.

Answer:

Through electromagnetic radiation