What color lights should be displayed on a motorboat at night?

The correct choice for the color lights a motorboat should display at night is red and green navigation lights. These colors are part of the standard navigation lighting system used on boats to communicate their presence and heading to other vessels.

The red light is displayed on the port (left) side of the boat, while the green light is on the starboard (right) side. This color coding is crucial for night navigation as it helps other boaters identify the direction a vessel is heading. For example, if a boater sees a red light, they know that the boat is facing them and that they should give way. This system helps prevent collisions and ensure safe navigation on the water at night.

In contrast, other options mentioned do not conform to the standard requirements for nighttime navigation lights, making them inappropriate for a motorboat's display. Navigation lights must be consistent with established maritime regulations to ensure safety and visibility on the water.