The lean philosophy is one of the early foundations of lean management, and it is based on six key concepts that are either adapted to or have been adapted from TQM$,$ SPC$,$ HRM$,$ etc. The $5S$ tool that removes clutter through workplace organization that fosters the discovery of waste is a good example of applying which of the following concepts?

a$.$ Flexibility

b$.$ A broad view of operations

c$.$ Visibility