The project manager should be accountable for managing the risks to project benefits. Project benefits are the expected outcomes or value that a project delivers to its stakeholders, such as improved efficiency, quality, customer satisfaction, or revenue. Project risks are uncertain events or conditions that may affect the project objectives, scope, budget, schedule, or quality. The project manager is responsible for identifying, analyzing, prioritizing, responding to, and monitoring project risks throughout the project life cycle. The other options are not accountable for managing project risks, as they have different roles and responsibilities. The enterprise risk manager is responsible foroverseeing the organization's overall risk management framework and strategy, but not for managing specific project risks. The project sponsor is responsible for initiating, approving, and supporting the project, but not for managing project risks. The information security officer is responsible for ensuring that the project complies with the organization's information security policies and standards, but not for managing project risks. References: CISA Review Manual (Digital Version), Chapter 3, Section 3.3