Sensitivity analysis: a. answers questions about what may happen if major assumptions change

The manager can plan many different scenarios with the "what if" so it is good to e prepared for changes.

Explanation:

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; an active listener;