The 'benefits management approach' is the management product the project manager should produce to plan reviews for confirming whether the expected measurable improvements have been achieved. This approach outlines how and when the benefits of the project are to be measured and assessed, aligning the project's deliverables with the intended outcomes.References: PRINCE2 7 Foundation documentation on benefits management.

Section: Volume B
Explanation/Reference:
Reference http://prince2.wiki/Managing_a_Stage_Boundary#Objective

The definition of 'culture' in the context of PRINCE2 and project management is the set of shared attitudes, values, goals, and ways of working that characterize a group of people. Culture impacts how project teams operate and interact, influencing decision-making, teamwork, and the overall success of a project.
References: PRINCE2 training materials and project management culture insights.