Why Is the Sky Blue

Multiple Choice

Why is the sky blue?

A) The air molecules absorb red light more effectively than blue light, allowing more blue light to reach observers on Earth's surface.
B) The air molecules scatter blue light more effectively than red light, so more blue light reaches observers on Earth's surface indirectly (from directions other than the direct beam of sunlight) .
C) The air molecules scatter red light more effectively than blue light, so less red light reaches observers on Earth's surface indirectly (from directions other than the direct beam of sunlight) .
D) The air molecules absorb blue light more effectively than red light, making the sky appear bluer.