According to TOGAF, which of the following is the usual approach for developing the Baseline Business Architecture if no architecture or few architecture assets exist?

A bottom-up approach starts by documenting existing processes, systems, and data, which is practical and necessary when an organization lacks a pre-defined architectural vision or comprehensive current-state documentation. This allows for the baseline to be built from the ground up, reflecting actual current operations.

Envisioning refers to conceiving the future state, not a method for documenting the current baseline.

Extensive describes the scope or depth of the effort, not a specific architectural development approach.

Refactoring is the process of restructuring an existing architecture for improvement, not an initial development approach.

A top-down approach is more commonly used for designing target architectures or when a clear strategic mandate needs to be decomposed, which is less suitable for establishing a baseline with few existing assets.