Final answer:
The correct answer is d. the entity's risk assessment process, which is critical for identifying and managing risks that could impact an organization's internal control system.
Step-by-step explanation:
The organization identifies and assesses changes that could significantly impact the system of internal control through d. the entity's risk assessment process. This process is integral to the system of internal control and involves a dynamic and iterative process for identifying and analyzing risks to achieving the entity's objectives, thereby determining how the risks should be managed. When changes occur, the risk assessment process ensures that the organization reevaluates its approach to risk management and makes adjustments as necessary to maintain effective internal controls. This includes evaluating the potential risks and their potential impact on the organization's ability to achieve its objectives.