Final answer:
A spaghetti diagram is a visual tool used to identify unnecessary motion in a process, helping to eliminate motion by visualizing the paths taken by workers or materials. It involves plotting points on a sketch diagram and drawing lines to represent the pathways taken. The correct option is c. motion.
Step-by-step explanation:
A spaghetti diagram is a visual tool used in lean manufacturing and process management to identify and mitigate wasteful aspects of workplace layout and process flows. The diagram is created by tracing the actual pathway taken by workers or materials as they move through the process. In the context of eliminating muda, which is a Japanese term for 'waste', the spaghetti diagram primarily targets the elimination of Muda of motion. By collecting data on the movement within a system, businesses can identify unnecessary steps, repetitive motion, and inefficient pathways.
When creating a spaghetti diagram, one would start by plotting the points representing locations or stages of a process on a sketch diagram. As the movement of individuals or materials is tracked, a line is drawn through these points to visualize the path taken. This makes it easier to see where motion can be reduced, leading to a more streamlined process. The primary goal of a spaghetti diagram is to reduce the complexity and redundancy of movements that correlate to the mud of motion', rather than overproduction, correction, or overprocessing.