When should the lights prescribed by the Rules be exhibited?

Answer: B — From sunset to sunrise and during periods of restricted visibility

The correct answer indicates that the lights prescribed by the Rules should be exhibited from sunset to sunrise and during periods of restricted visibility. This is important for ensuring safety on the water, as navigation lights are essential for preventing collisions and making vessels identifiable to one another, especially in low-light conditions or when visibility is compromised. During sunset to sunrise, the darkness makes it difficult to see vessels unless they are properly lit. Similarly, in conditions such as fog, rain, or heavy seas that restrict visibility, having the appropriate navigation lights displayed becomes crucial. It allows other vessels to determine the location and heading of a vessel, which is vital for safe navigation. The other choices do not fully cover the requirements for light usage as described in the nautical Rules of the Road. Some alternatives suggest limited use of lights, which overlooks critical circumstances like poor visibility when the lights become necessary for safety.