What is chance music?

CHANCE MUSIC  The musical styles that evolved in the modern era were varied. These devices are used for creating and recording music to add to or to replace acoustical sounds

Explanation:

answer; (b) capitalism;

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.