The name ‘roy g. biv"" is one way to remember the colors of the light spectrum. this is an example of an acronym the peg-word system the substitute word system name association

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.

answer; utilitarian;

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