Final answer:
Materials management involves activities such as manufacturing planning and control, and physical supply/distribution.
Step-by-step explanation:
Materials management is a key function in business organizations, particularly in manufacturing and supply chain management. It involves activities such as inventory control, procurement, production planning, and distribution.
I. Manufacturing planning and control is a major activity of materials management. This includes activities such as setting production schedules, ensuring the availability of raw materials, and managing production processes to meet customer demand.
II. Physical supply/distribution is also a major activity of materials management. This includes activities such as transportation, warehousing, and order fulfillment, to ensure that products are delivered to customers in a timely and efficient manner.
Therefore, the correct answer is C. Both I and II.