A Product Goal is a summary statement of the desired outcome or value that the product should deliver. It communicates the target future state of the product, which is aligned with the product vision and strategy. It enhances focus by providing a clear direction and purpose for the Scrum Team and the stakeholders. It is a commitment contained in the Product Backlog, which means that it is transparent, visible, and understood by everyone involved in the product development. It provides a long-term objective for the Scrum Team to plan against, which helps them to prioritize and refine the Product Backlog items and to craft the Sprint Goals.
Option D is not correct because the Product Goal does not need to have the approval of all stakeholders. The Product Owner is accountable for the value of the product and the Product Backlog, and therefore has the authority to define and communicate the Product Goal. The Product Owner may collaborate with the stakeholders to discover and validate their needs and expectations, but does not need to seek their consensus or permission for the Product Goal.
Option F is not correct because the Product Goal is not a contract with the business, but rather a flexible and adaptable guide for the product development. The Product Goal is not fixed and immutable, but rather emergent and dynamic. It can be changed or updated as the product evolves and the market conditions change. The Product Goal does not limit or constrain the changes that may occur during the product development, but rather enables and supports them. References:
* Professional Scrum Product Owner II Assessment
* Understanding and Applying the Scrum Framework
* Managing Products with Agility
* Scrum Guide 2020 Update - Introducing the Product Goal
* The Product Goal explained

As a Product Owner, you need to embrace agility and empiricism in your product development. This means that you should be able to inspect and adapt your product based on feedback from the market, customers, users, and stakeholders. You should also be able to experiment and learn from your failures and successes. To do this, you need to have a flexible and adaptable product architecture that can support frequent changes and new features. You also need to collaborate with your Scrum Team and other teams in the organization to deliver value incrementally and iteratively. Therefore, leaning on your organizational efficiency and existing architecture to build your product aligned to the current organization is the least effective way to enhance your agility. This approach can limit your innovation, creativity, and responsiveness to the changing needs and expectations of your customers and users. It can also create silos, dependencies, and conflicts within and across teams, and reduce the quality and value of your product.
References:
Professional Scrum Product Owner™ II Certification
Evolving the Agile Organization
Managing Products with Agility