The system's __?__ defines the extent of the design according to operational requirements. (borders, controls, scope, boundaries)

Answer: Scope

Explanation:System's scope is the tendency of the operation and design to be in the processing and is expected to keep the interface. This extent also has the function of keeping the records of the tasks. operation, cost, duration and deadlines in the form of list or table.

System's scope, which is also known as the project scope is set in the system so that the result can achieved and deadline is not exceeded.