Final answer:
Materials management aims to provide the required level of customer service and to maximize the use of the firm's resources, representing both objectives I and II. Option c.
Step-by-step explanation:
The objective of materials management is to provide the required level of customer service and to maximize the use of the firm's resources. These objectives ensure that materials and related resources are effectively utilized to meet customer demands while maintaining efficiency and cost-effectiveness within the company operations. Therefore, the correct answer to which objectives materials management aims to achieve is: C. Both I and II.