Which of the following is a technique that can be used to discover and document business requirements in Phase A?

The technique known as Business Scenarios is highly effective for discovering and documenting business requirements in Phase A of the TOGAF Architecture Development Method (ADM). Business Scenarios provide a structured way to capture the real-world problems and opportunities that the organization faces. They help to illustrate the context in which the architecture will operate, allowing stakeholders to visualize and understand the impact of potential solutions.

By using Business Scenarios, architects can gain a comprehensive understanding of the requirements from various angles, including user needs, business objectives, and external factors. This narrative-driven approach fosters engagement among stakeholders, ensuring that their perspectives and insights are included in the requirement gathering process. As a result, it facilitates a more in-depth exploration of the business environment, leading to more accurately defined business requirements that align with the organization's goals.

In contrast, other techniques listed could play a role in different aspects of the architectural process but are not primarily focused on the discovery and documentation of business requirements in the initial phase. For instance, the Business Transformation Readiness Assessment evaluates an organization's preparedness for change, Gap Analysis identifies differences between current and desired states, and Stakeholder Management typically involves coordinating and managing stakeholder expectations and relationships throughout the entire architecture process, rather than just in the context of gathering requirements.