In TOGAF, Architecture Governance is concerned with establishing and operating the structures, processes, and controls that ensure architecture is properly managed and complied with across the enterprise. A central part of this practice is the implementation of controls over the creation and evolution of architectural components. This means governance is not only about defining architecture, but also about ensuring that architecture work products, building blocks, standards, and implementation activities are developed in a controlled and consistent way.

Option B is therefore the best answer because it reflects the core governance function of directing and controlling architecture-related work. Governance in TOGAF includes oversight, compliance assessment, decision rights, dispensations, and monitoring conformance to approved architectures and standards.

Option A may occur in leadership engagement, but it is not the clearest definition of architecture governance practice itself. Option C is incorrect because the Statement of Architecture Work is produced and maintained as part of ADM execution, especially early-phase planning, not as a defining governance practice throughout the full cycle. Option D relates more to stakeholder management and requirements management, which are important architecture activities, but they are not the best direct description of architecture governance.

Therefore, the correct answer is B.