Discussion
A method that includes drawing floor plan fastened with board pins, and tread is called :
Answer: A
The method using a floor plan with pins and thread is the pathway chart.
A pathway (or string) chart is a work simplification technique. The floor plan of the kitchen or work area is drawn to scale and fixed on a board, pins are placed at the work centres, and a thread is wound from pin to pin in the order the worker moves. Measuring the thread gives the distance walked, and rearranging the centres shows how to shorten it. ('Tread' in the stem stands for thread.)
Process and operation charts record steps with symbols, not a thread on a plan, and graph charts plot data.
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