Answer this question: Denise was driving east over a hill in the afternoon, shortly after a rain shower. Suddenly the sun broke through the clouds, and she saw a rainbow ahead of her. Which of the following made the rainbow possible?
Available choices:
(1). Sunlight can be separated into all the colors of the rainbow.
(2). Water reflects sunlight like a mirror to make it look colored.
(3). Overhead black clouds reflect in puddles to cause a mirage.
(4). Air pollution causes the sky to look colored under these conditions.. Answer: