In the context of the 5s principles, means to keep a process going through training, communication, and organizational structures. sort shine standardize sustain

The answer is "Sustain".

Sustain is the final step for 5S is surely the most demanding, remaining trained enough will support those certain transforms aggravated in the primary three steps. It may be incredulous that the new framework make upheld or the deliberations and fetches place under creating those new framework will make pointless.
 Toward executing or neglecting an formal framework set up that incorporates general preparing and communication, representatives will have the capacity on agreeably comply with those company’s 5S methods. 

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

explanation:

productive can also mean:

producing or giving rise torelating to or engaged in the production of goods, crops, or other commodities.

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