You have proposed a portfolio governance model to your company, but an executive told that the current culture might not be flexible enough to change the organizational structure. What kind of risks…

Cultural risk involves risks from values, beliefs, or behaviors that resist change; while culture is the root cause here, the executive specifically framed the concern as the structure not being flexible enough - pointing to structural risk.

Execution risk relates to the ability to carry out portfolio work as planned, not to structural constraints that prevent organizational redesign.

Structural risk refers to risks arising from the inability of the organizational structure to support required changes or a proposed governance model. The executive's concern that the structure lacks the flexibility to change directly describes a structural risk, because the impediment affects the organization's formal hierarchy and design.

Portfolio risk is a broad category encompassing all risks to the portfolio and is not a specific risk type describing structural inflexibility.