Final answer:
The process that involves determining future actions to operate an existing supply chain is known as Planning. It is a key component of supply chain management and necessary for efficient business operations.
Step-by-step explanation:
Planning consists of the processes needed to determine the set of future actions required to operate an existing supply chain. This involves important decisions that define a firm's behavior and include aspects such as production scale, inventory levels, and delivery schedules.
Supply chain management is crucial to business operations and involves various strategies and processes to ensure efficiency and effectiveness in the production and distribution of goods and services. The correct option that describes the set of future actions required to operate an existing supply chain is (e) Planning.