The answer is 2 because yes
I believe the answer is d. I am not 100% sure thou
here is a link... I hope this info can help you http://listverse.com/2011/02/19/top-10-greatest-philosophers-in-history/
Answer: Sir Isaac Newton invented the first color wheel. While studying white light reflecting off prisms, he noticed that the light reflected a spectrum of colors. Noting down the different hues, he believed the rainbow of colors shared a harmonious relationship.
Explanation: hope it helps ^w^
