Sun dogs create the appearance of: A) shimmering water on the horizon. B) a rainbow around the observer's shadow. C) two "mock suns" on the outer rim of a halo. D) a ring around the sun.

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Sun dogs, also known as parhelia, are bright spots that appear on either side of the sun, usually when it is low on the horizon. They are caused by the refraction of sunlight through ice crystals in the atmosphere. They create the appearance of two "mock suns" on the outer rim of a halo.

Sun Dogs Create the Appearance Of