what question could you ask based on the below?

As a manager of the Toyota assembly line, Doug Friesen is tasked with optimizing production, maintaining a high level of quality and minimizing costs by aligning the supplier network with the assembly process. The Toyota Production System $($TPS$)$ aims to integrate suppliers to reduce waste, but seat quality issues have been causing significant delays. Friesen could either work closely with suppliers or build in additional buffer time to address these problems. One potential solution is leveraging kaizen within the seat supplier$$s own production system to address the issues before they reach the assembly line. The issue arises on choosing what is a more optimistic path for the company in the United States market; control quality and cost by nurturing and supporting synergistic relationships with suppliers or focusing on controlling the entire manufacturing process by producing each component of the end result product.