The most effective way to communicate the value of information security to senior management is to describe how security enables business objectives (B). CISM emphasizes that executives view security as valuable when it supports revenue generation, operational resilience, customer trust, and strategic goals. Discussing training benefits (A), potential impacts (C), or ROI (D) alone frames security as a cost or fear-based function. Positioning security as a business enabler aligns it with executive priorities and promotes sustained support. References: ISACA CISM Review Manual (Governance-executive communication and value realization); CISM Exam Content Outline (Domain 2).