The maturity of an IT risk management program is most influenced by the organization’s risk culture, as this reflects the shared values, beliefs, and attitudes that shape how the organization perceives and responds to risk. The risk culture determines the level of awareness, commitment, and involvement of the stakeholders in the IT risk management process, as well as the degree of integration and alignment with the enterprise’s objectives and strategy. A mature IT risk management program requires a strong and positive risk culture that fosters trust, collaboration, and accountability among the stakeholders, and supports continuous improvement and learning. The other options are not the most influential factors for the maturity of an IT risk management program, although they may have some impact or relevance. Benchmarking results against similar organizations can provide useful insights and comparisons, but they do not necessarily reflect the organization’s own risk culture or context. Industry-specific regulatory requirements can impose certain standards and expectations, but they do not guarantee the effectiveness or efficiency of the IT risk management program. Expertise available within the IT department can enhance the technical and operational aspects of the IT risk management program, but it does not ensure the strategic and cultural alignment with the enterprise. References = Risk and Information Systems Control Study Manual, Chapter 1: IT Risk Identification, page 23.