Explanation
According to the Certified Information Security Manager (CISM) Study Manual, a mature information security culture is one in which staff members regularly consider risk in their decisions. This means that they are aware of the risks associated with their actions and take preventative steps to reduce the likelihood of negative outcomes. Other indicators of a mature information security culture include mandatory information security training for all staff, documented and communicated information security policies, and regular interaction between the CISO and the board.
Maintaining an information security governance framework enables an organization to identify, assess, and manage its information security risks. By establishing policies, procedures, and controls that are aligned with the organization's objectives and risk tolerance, an information security governance framework helps ensure that information security risks are managed to an acceptable level.
According to the Certified Information Security Manager (CISM) Study Manual, "Information security governance provides a framework for managing and controlling information security practices and technologies at an enterprise level. Its primary objective is to manage and reduce risk through a process of identification, assessment, and management of those risks." While the other options listed (prioritizing resources, communicating guidelines, and remaining compliant with regulations) are also important benefits of maintaining an information security governance framework, they are all secondary to the primary benefit of managing business risks to an acceptable level.
Reference:
Certified Information Security Manager (CISM) Study Manual, 15th Edition, Pages 60-63.

Explanation
An information security strategy is the most important element to have in place as a basis for developing an effective information security program that supports the organization's business goals. An information security strategy is a high-level plan that defines the vision, mission, objectives, scope, and principles of information security for the organization1. It also aligns the information security program with the organization's strategy, culture, risk appetite, and governance framework2. An information security strategy provides the direction, guidance, and justification for the information security program, and ensures that the program is consistent, coherent, and comprehensive3. An information security strategy also helps to prioritize the information security initiatives, allocate the resources, and measure the performance and value of the information security program4.
The other options are not as important as an information security strategy, because they are either derived from or dependent on the strategy. Metrics are used to drive the information security program, but they need to be based on the strategy and aligned with the goals and objectives of the program. Information security policies are the rules and standards that implement the information security strategy and define the expected behavior and responsibilities of the stakeholders. A defined security organizational structure is the way the information security roles and functions are organized and coordinated within the organization, and it should reflect the strategy and the governance model. References = 1: CISM Review Manual 15th Edition, Chapter 1, Section
1.1 2: CISM Review Manual 15th Edition, Chapter 1, Section 1.2 3: CISM Review Manual 15th Edition, Chapter 1, Section 1.3 4: CISM Review Manual 15th Edition, Chapter 1, Section 1.4 : CISM Review Manual
15th Edition, Chapter 1, Section 1.5 : CISM Review Manual 15th Edition, Chapter 1, Section 1.6 : CISM Review Manual 15th Edition, Chapter 1, Section 1.7

Section: INFORMATION SECURITY GOVERNANCE
Explanation:
The most fundamental evaluation criterion for the appropriate selection of any security technology is its ability to reduce or eliminate business risks. Investments in security technologies should be based on their overall value in relation to their cost; the value can be demonstrated in terms of risk mitigation. This should take precedence over whether they use new or exotic technologies or how they are evaluated in trade publications.