Answer:
The answer is both. Despite most of Duchamp's work was a sort of spoof (including "N*ude Descending a Staircase"), the consequences of his trajectory represent a critical watershed in the History of Art.
Answer:
<em>violin, viola, cello, and bass.</em>
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A light shinning in through a glass, or a car window, or a window! Make sure you add color to make it pop :) You could use a flashlight as well, or the light on a cellphone.