In the context of supply chain management, logistics refers to:

Logistics within supply chain management encompasses a broad range of activities beyond just moving goods from one location to another. The correct choice highlights that logistics involves the planning, implementation, and control of various aspects of the movement of goods. This includes not only transportation but also warehousing, inventory management, order fulfillment, and distribution strategies.

This comprehensive approach ensures that products are delivered in the right quantity, to the right location, and at the right time, which is crucial for meeting customer demands and maintaining operational efficiency. By managing these various elements effectively, logistics plays a vital role in optimizing the supply chain as a whole.

Other options fall short in their scope. While transportation is a significant component of logistics, it doesn't encompass the entire function. Similarly, managing supplier relationships and financial management are important aspects of supply chain management, but they don't specifically define logistics, which is fundamentally focused on the physical movement and handling of goods throughout the supply chain.