The class of information known as the Reference Library within the Architecture Repository contains guidelines and templates used to create new architectures. The Reference Library provides a set of resources that can be leveraged or customized for specific architecture development purposes. It includes generic building blocks, patterns, models, standards, frameworks, methods, techniques, best practices, etc. Reference:
The TOGAF Standard | The Open Group Website, Section 2.4 Architecture Repository.

TOGAF's governance guidance distinguishes benefits such as transparency, accountability, and discipline in operating governance processes. Formal TOGAF conformance topics include "The benefits of Architecture Governance," which include establishing and enforcing processes and controls (discipline) for architecture decision-making and compliance. togaf-cert.opengroup.org Reference: The Open Group, TOGAF Conformance Requirements (Multi-Level)-Unit on Architecture Governance (KLP 44.2-2 "The benefits of Architecture Governance").

The objectives listed in the question correspond to the objectives of different phases of the TOGAF ADM (Architecture Development Method), which is a method for developing and managing an enterprise architecture1.
The ADM consists of nine phases, each with a specific purpose and output. The phases are1:
Preliminary Phase: To prepare and initiate the architecture development cycle, including defining the architecture framework, principles, and governance.
Phase A: Architecture Vision: To define the scope, vision, and stakeholders of the architecture initiative, and to obtain approval to proceed.
Phase B: Business Architecture: To describe the baseline and target business architecture, and to identify the gaps between them.
Phase C: Information Systems Architectures: To describe the baseline and target data and application architectures, and to identify the gaps between them.
Phase D: Technology Architecture: To describe the baseline and target technology architecture, and to identify the gaps between them.
Phase E: Opportunities and Solutions: To identify and evaluate the opportunities and solutions for implementing the target architecture, and to define the work packages and transition architectures.
Phase F: Migration Planning: To finalize the implementation and migration plan, and to ensure alignment with the enterprise portfolio and project management.
Phase G: Implementation Governance: To provide architecture oversight and guidance for the implementation projects, and to manage any architecture change requests.
Phase H: Architecture Change Management: To monitor the changes in the business and technology environment, and to assess the impact and performance of the architecture.
Based on the above definitions, we can match each objective with the corresponding phase as follows:
Objective 1: Develop the Target Data Architecture that enables the Business Architecture and the Architecture Vision. This objective is achieved in Phase C: Information Systems Architectures, where the data architecture is defined as a subset of the information systems architecture2.
Objective 2: Develop the Target Business Architecture that describes how the enterprise needs to operate to achieve the business goals. This objective is achieved in Phase B: Business Architecture, where the business architecture is defined as a subset of the enterprise architecture3.
Objective 3: Develop a high-level aspirational vision of the capabilities and business value to be delivered as a result of the proposed Enterprise Architecture. This objective is achieved in Phase A: Architecture Vision, where the architecture vision is defined as a high-level description of the target architecture and its benefits4.
Objective 4: Develop the Target Application Architecture that enables the Business Architecture and the Architecture Vision, in a way that addresses the Statement of Architecture Work and stakeholder concerns. This objective is achieved in Phase C: Information Systems Architectures, where the application architecture is defined as a subset of the information systems architecture2.
1: The TOGAF Standard, Version 9.2, Chapter 5: Architecture Development Method (ADM)
2: The TOGAF Standard, Version 9.2, Chapter 9: Phase C: Information Systems Architectures
3: The TOGAF Standard, Version 9.2, Chapter 8: Phase B: Business Architecture
4: The TOGAF Standard, Version 9.2, Chapter 7: Phase A: Architecture Vision

Based on the illustration, the phase of the ADM labeled as item 2 is the Implementation Governance phase.
This phase provides architectural oversight for the implementation. It ensures that the implementation project conforms to the architecture. It also provides a framework for monitoring and managing the implementation.
The Implementation Governance phase involves the following activities:
Finalizing the Architecture Roadmap and the supporting Implementation and Migration Plan Assigning an Architecture Board to oversee the implementation Establishing Architecture Contracts with the implementation partners Reviewing and approving the implementation project plans and deliverables Performing Architecture Compliance reviews to ensure alignment with the architecture Performing Architecture Audit reviews to ensure quality and performance of the architecture Resolving any architecture issues or change requests that arise during the implementation Maintaining the architecture lifecycle and ensuring its continuity The Implementation Governance phase is essential for ensuring that the architecture is realized as intended and that it delivers the expected business value and outcomes.
Implementation Governance

A business scenario describes business and technology environment in which those problems occur. It provides a realistic context for identifying and addressing business problems and opportunities, as well as their impact on the enterprise's architecture. Reference: The TOGAF Standard | The Open Group Website, Section 3.3.1 Business Scenarios.
business and technology environment in which those problems occur https://pubs.opengroup.org/togaf- standard/business-architecture/business-scenarios.html#_Toc68617078 " A Business Scenario is a uniform description of: - Real business problems - The business and technology environment in which those problems occur - Value streams enabled by capabilities - The desired outcome(s) of proper execution - The human and computing components (the "actors") who provide the capabilities"