Which uniquely american form of 1950s music emphasized youthful rebellion and eventually spread worldwide?
a. the motown sound
b. new orleans jazz
c. rhythm and blues
d. rock and roll

answer: nice

explanation:

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artists need to create a realistic interpretation so that people in general can relate to the artwork. for a common people, an artist's impression gets increased only if he can create something which would look realistic. an abstract is difficult for a common people to understand whereas if a person can draw a girl with simple pencil sketch and if that looks like a real figure then the latter will be praised more than the former.