A 600-volt, current-limiting fuse with a 200-kiloamp interrupting rating can impact which components of risk when arcing currents are in the current-limiting region?

The choice indicating that the fuse can impact both likelihood and severity is based on the inherent functions of current-limiting fuses in electrical systems.

Current-limiting fuses are designed to operate quickly in the event of a fault, effectively reducing the duration and magnitude of the fault current. By limiting the amount of current that can flow during an arc fault or other short-circuit conditions, these fuses significantly reduce the potential for severe electrical events.

In terms of likelihood, when a current-limiting fuse operates effectively, it reduces the chance that a dangerous level of current will persist, thus lowering the probability of damage or injury. Concurrently, by cutting off excessive current quickly before it can develop into a more severe situation, the fuse also mitigates the potential severity of any resulting arc flash or electrical explosion.

Since both aspects—likelihood of an incident occurring and the potential severity of that incident—are addressed by the operation and characteristics of a current-limiting fuse, the correct answer emphasizes that it affects both components of risk accordingly.