The most likely reason the chief risk officer (CRO) chose the workshop approach is that it allows workshop participants to learn while contributing ideas toward the objectives. Workshops facilitate an interactive and collaborative environment where participants can share their insights and experiences. This approach helps in generating innovative solutions and fosters a sense of ownership among participants. It also enables participants to gain a better understanding of the issues at hand and the potential improvements that can be made. Reference: IIA Practice Guide - Facilitation and Collaboration Techniques, COSO Framework on Risk Management