Final answer:
New technologies are a major change driver that supply chain managers are concerned about.
Step-by-step explanation:
Supply chain managers are concerned about various factors that can drive major changes in the supply chain. One of the major change drivers that supply chain managers are concerned about is new technologies. Advances in technology can revolutionize supply chain processes, improve efficiency, and create new opportunities for growth. For example, the implementation of automation, data analytics, and artificial intelligence in supply chain management can optimize inventory management, streamline logistics, and enhance overall supply chain performance.