When workers make fewer mistakes and do better work, it reduces
a. management and waste
b. waste and rework
c. rework and innovation
d. innovation and management?

When workers make fewer mistakes and do better work, it reduces: b. waste and rework  

In this business context, waste refers to the resources that are overused or underused for the operation and rework refers to the operation that needed to be repeated. Doing better work would mean that the workers do not overuse the resource and making fewer mistakes mean that there would be less work needed to be repeated.

its d i know cause i've been googling it