What is a key outcome of the verification of requirements?

The correct answer focuses on ensuring that specifications and models are usable, which is a crucial aspect of the requirements verification process. Verification of requirements involves checking that the documented requirements are complete, consistent, and clearly defined, thereby making the requirements usable for stakeholders such as designers, developers, and testers.

This process ensures that everyone involved in the project has a common understanding of what is required, thereby reducing the likelihood of misunderstandings and rework later in the project lifecycle. Usable specifications lead to effective design and implementation, enabling the project team to develop solutions that meet stakeholder needs and expectations effectively.

Other options, while important in their contexts, do not directly pertain to the primary outcome of requirements verification. Ensuring alignment with project risks relates more to risk management rather than direct verification. Reducing complexity of deliverables can be a byproduct of clear requirements but is not the purpose of verification itself. Similarly, establishing project deadlines involves planning and scheduling rather than the evaluation of requirements for usability.