One important purpose of COBIT is to

The purpose of COBIT (Control Objectives for Information and Related Technologies) is primarily to provide a comprehensive framework that guides managers, users, and auditors in adopting best practices for the effective management and governance of information technology. COBIT helps organizations align their IT strategies with business goals, ensuring that IT investments support and deliver business value while managing risks effectively. This guidance is essential in navigating the complexities of IT management and ensuring that all stakeholders are on the same page regarding standards and expectations.

The other options do address important aspects of information management and controls, but they do not encompass the broader aim of COBIT. While identifying control plans to prevent fraud, specifying components for e-commerce systems, and suggesting management information types are all relevant in their own rights, they represent more specific applications or areas of focus rather than the overarching purpose that COBIT serves in promoting best practices across the enterprise.