Explanation: Enterprise architecture (EA) is the most important input for managing the risk associated with creating a mobile application, because it provides a holistic view of the current and future state of the enterprise’s IT environment, including its goals, principles, standards, policies, processes, technologies, and systems. EA helps to identify the gaps, dependencies, constraints, and opportunities for the mobile application initiative, and to align it with the enterprise’s strategic objectives and business requirements. EA also helps to assess the impact of the mobile application on the existing IT infrastructure, security, performance, and compliance. By using EA as an input for IT risk management, the enterprise can ensure that the mobile application is designed, developed, deployed, and maintained in a consistent, coherent, and optimal way that minimizes the potential risks and maximizes the expected benefits. The other options are not the most important input for managing the risk associated with creating a mobile application, but rather some of the outputs or outcomes of IT risk management. An IT risk scorecard is a tool that measures and reports the performance of IT risk management activities and controls. An enterprise risk appetite is a statement that defines the level and type of risk that an enterprise is willing to accept or avoid in pursuit of its objectives. Business requirements are the specifications that describe what the mobile application should do and how it should meet the needs and expectations of the users and stakeholders. References := ISACA, CGEIT Review Manual, 27th Edition, 2020, page 15; Enterprise Architecture as Business Capabilities Architecture