What is the primary responsibility of the reactor electrical systems?

The primary responsibility of the reactor electrical systems is to ensure the operation, care, and maintenance of both the reactor electrical systems and the propulsion plant electrical systems. This encompasses a range of activities, including monitoring the reactor's electrical output, managing the distribution of power within the ship, and ensuring that the propulsion systems function efficiently.

By overseeing the reactor electrical systems, personnel help maintain the integrity and reliability of the electrical power needed to operate vital systems on the ship. This includes not just the reactor itself but also auxiliary systems that support propulsion and other critical operations.

While power generation is an important function, the breadth of management required in option B captures the comprehensive nature of the responsibilities, including maintenance and operational readiness, which are crucial for the safe and effective function of the ship's reactor and propulsion systems. Other options, such as transmission of navigation signals or control of defensive weapon systems, although important, fall outside the direct responsibilities focused on by the reactor electrical systems.