What are some of the common ways salespeople add value to the products they sell?

answer; (c) a law code that provides believers with a set of pratical laws to regulate their daily lives

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; the above statement is (true);