Drag each tool below into the box corresponding to the step in the dmaic cycle where it is most likely to be used.

Define (articulate the problem, objectives, resources, project, etc):

-Quality Circles

-Flow charts

Measure (collection of data, establish base lines for improvement):

-Pareto Charts

-Check Sheets

Analyse (identify, validate):

-Cause-and-effect diagrams

Improve (test and implement solutions):

-Brainstorming 

Control (monitoring improvements and ensure continuing success):

-Control Charts for new Process

it's unlikely a majority of a large population would agree on issues

hope this : )

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.