正解:A
A key component of governance in cybersecurity is defining roles and responsibilities. Governance ensures that the right people within an organization are assigned specific duties related to security and that they are held accountable for those responsibilities. This helps establish clear lines of authority and accountability, ensuring that everyone knows what they are responsible for in terms of security practices, policies, and procedures.
While standardizing technical specifications, defining tools and technologies, and enforcing penetration testing are important elements of a cybersecurity strategy, defining roles and responsibilities is essential for overall governance to ensure that security practices are consistently followed.