Requirements in a requirements document can be specified in which of the following ways?

The correct answer emphasizes the importance of categorizing requirements in a structured way that directly relates to the functionality and performance of a project. Functional requirements define specific behaviors or functions of a system, detailing what the system should do. For example, a functional requirement for a software application might specify that users must be able to log in with a username and password.

Performance requirements outline the criteria that must be met for a system to be considered effective and operational under expected conditions. This could include response times, resource usage, or throughput.

Constraints refer to the limitations or restrictions that the design or implementation must adhere to, which can include regulatory standards, budgetary constraints, or technological limitations. These elements combined create a comprehensive overview that aids in the design, development, and evaluation phases of engineering projects.

By organizing requirements in this way, engineers can ensure that all necessary aspects of a project are addressed, helping facilitate clear communication and understanding among stakeholders throughout the project lifecycle.