Question

without scattering of light by small particles in the atmosphere, we would see: a. a blue sky. b. a blue moon. c. red sunsets. d. a white sun in a black sky

Explanation:

The blue - color of the sky is due to Rayleigh scattering of sunlight by small particles in the atmosphere. Without this scattering, there would be no blue - colored sky. Also, red sunsets are a result of scattering. A blue moon is an astronomical term not related to light - scattering in this context. Without scattering, the sun would appear white against a black sky as there would be no light being scattered to illuminate the sky.

Answer:

D. a white sun in a black sky