Lean manufacturing is a business philosophy that focuses on reducing time and cost and eliminating poor quality. This is accomplished in manufacturing and nonmanufacturing processes by

A) moving a product from process to process as each function is completed
B) combining processing functions into work centers and cross-training workers to perform more than one function
C) having production supervisors attempt to enter enough materials into manufacturing to keep all manufacturing departments operating
D) having workers typically perform one function on a continuous basis

Lean manufacturing focuses on reducing waste in processes, including time and cost, as well as eliminating poor quality. One way to achieve this is by combining processing functions into work centers so that the product can move smoothly between processes, and workers are cross-trained to perform multiple functions. This enables a leaner and more efficient workflow, reducing costs and improving quality. Option A is not the best choice because it suggests that the product should move from process to process as each function is completed, which could result in delays and inefficiencies. Option C is not a good choice because it relies on production supervisors to enter enough materials into manufacturing, which might not be the most effective method for reducing waste. Option D is not a good choice because it suggests that workers should typically only perform one function on a continuous basis, which could result in a lack of flexibility and cross-training opportunities.