Final answer:
D. membership characteristics, role definitions, and internal procedures
Membership characteristics, role definitions, and internal procedures are the continuously-changing factors that require human resources strategies to be reviewed regularly.
Step-by-step explanation:
Continuously-changing factors that impact the need for human resources strategies to be examined regularly include membership characteristics, role definitions, and internal procedures. The correct answer to the student's question is D. membership characteristics, role definitions, and internal procedures. Each of these factors is dynamic and can alter the strategic needs of an organization, thus requiring regular review to maintain alignment with the organization's goals and external environment. Demographic shifts within a company's workforce, changes in job roles due to technological advancement, and alterations in internal processes due to growth or restructuring are examples of such changes.