Which composer engaged in scholarly studies that focused on the social dimension of music and the ways it's used within and between cultures?
a. béla bartók
b. john cage
c. john williams

The best and most correct answer among the choices provided by the question is the second choice "John Cage"

John Milton Cage Jr. was an American composer, music theorist, writer, philosopher, and artist. He is a pioneer of indeterminacy in music, electroacoustic music, and non-standard use of musical instruments.

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Answer nationalistic music;

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