Which of the following does TOGAF describe as a package of functionality defined to meet business needs across an organization?

An application is a specific software program, which could be a building block, but 'building block' is the more general TOGAF term for a package of functionality meeting business needs.

An architecture viewpoint is a representation of an architecture from the perspective of a specific stakeholder, not a package of functionality.

TOGAF defines a building block as a (potentially reusable) package of functionality defined to meet business needs across an organization. Building blocks can be architectural building blocks (reusable components of an architecture) or solution building blocks (components used to implement solutions), both serving as foundational elements that can be combined to create larger architectures or solutions.

A deliverable is an output of the architecture process (e.g., an architectural description), not a package of functionality.

A solution architecture is a specific instance of an architecture designed to solve a particular problem, typically composed of multiple building blocks, not a single package of functionality.