Final answer:
The correct option is D: Optimize flow. By reducing WIP, smaller batches can be processed, leading to faster cycle times and reduced queue lengths.
Step-by-step explanation:
Options A, B, and C are not effective ways to address the question as they do not align with the intended goals. Enhancing system complexity (option A) would create more issues and conflicts in managing the workflow. Increasing work in process (option B) would lead to more inventory and longer lead times, which defeats the purpose of limiting WIP.
The correct option is D: Optimize flow. Visualizing and limiting WIP, reducing batch size, and managing queue lengths are strategies that help optimize flow in a production system. By reducing WIP, smaller batches can be processed, leading to faster cycle times and reduced queue lengths. This helps to minimize delays and increase overall efficiency.