What Proportion of the Solar Radiation That Reaches Earthʹs Surface

Multiple Choice

What proportion of the solar radiation that reaches Earthʹs surface is visible light?

A) About 90% of it is visible light.
B) A small fraction is visible light.
C) It is captured by plants and used in photosynthesis.
D) Most of the radiation is absorbed by rocks on Earthʹs crust.
E) About half is visible light.