Is the term psychologists use to describe the force that moves people to behave in particular ways.

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.

your answer would b. the missisipi river

hope i you : )

answer; they are called (pebbling);

answer; substantive law;