Which object is visible only by reflection?

a. the sun

b. earth's moon

c. a candle flame eliminate

d. a bolt of lightening

A. The sun is the object only visible by reflection.

Looking directly into the sun is impossible to do. Its brightness hurts our eyes making us squint. It is also detrimental to our eyesight if we persist on looking directly at the sun. We resort to looking at its reflection on bodies of water or glass to view it directly.