Question

He is one of the leading composers of electronic and serial music.

A. John Cage
B.Karlheinz Stockhausen
C.Edgard Varese
D. Philip Glass​

Answer 1

the answer is A

Step-by-step explanation:

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

Answer 2

The answer is B. Karlheinz Stockhausen

German composer, an important creator and theoretician of electronic and serial music who strongly influenced avant-garde composers from the 1950s through the '80s

Step-by-step explanation:

I hope it helps!!