Final answer:
Continuous improvement and flexible systems are essential for the success of JIT and lean systems, emphasizing waste elimination and efficiency maximization, including the adoption of practices such as the PDCA cycle and the adaptation to changing demands.
Step-by-step explanation:
Continuous improvement and flexible systems are indeed fundamental requirements for successful Just-In-Time (JIT) and lean systems. This is because JIT and lean manufacturing philosophies emphasize the elimination of waste and the maximization of efficiency within production processes. Continuous improvement, which is an ongoing effort to improve products, services, or processes, is a core principle of lean. It is typically implemented through methodologies such as the Plan-Do-Check-Act (PDCA) cycle, encouraging frequent assessment and adjustments.
Flexible systems are essential to lean and JIT because they allow an organization to quickly adapt to changing customer demands and market conditions without sacrificing quality or incurring excessive costs. This includes being able to change production processes, adjust to new product designs, or make other necessary operational changes efficiently. Therefore, the option A. True is correct, asserting that both continuous improvement and flexible systems are critical for the function of JIT and lean systems.