Final answer:
The option that is NOT a trend in supply chain management is e) Measuring supply chain return on investment (ROI) because while an important metric, it's a standard business practice rather than a trend.
Step-by-step explanation:
The best answer to the question "Which is NOT a trend in supply chain management?" is e) Measuring supply chain return on investment (ROI). The other options given are indeed current trends within the field of supply chain management: a) The circular supply chain focuses on reusing materials and products to minimize waste, b) Adopting lean principles aims to reduce waste and improve operational efficiency, c) Reducing costs is a perennial objective in supply chain optimization, and d) Sustainable supply chains are increasingly desired to minimize environmental impact and support corporate social responsibility. On the other hand, measuring supply chain ROI, while an important metric, is not considered a trend but rather a standard business practice aimed at evaluating the financial performance of supply chain activities.