The constraint that must be addressed is: The system must be developed within a specified budget that has been set by the power company.
This is a clear constraint because it defines a limit on resources (financial) that can be allocated to the project. Constraints are factors that restrict or limit the design and development process, such as budget, time, and specific requirements that must be met. The other options provided, while important considerations, are more about design requirements or operational goals rather than strict constraints.