If a single switch controls all navigation lights, how are the lights most likely arranged?

When a single switch controls all navigation lights, it is common for those lights to be arranged in a parallel configuration. This arrangement allows each light to operate independently of the others while still being controlled by the same switch. If one light were to fail, the others would still function, which is crucial for safety while navigating.

Arranging the navigation lights in series with each other would mean that if one light fails, all lights would go out, which is not desirable in a safety-critical application like navigation.

Regarding the arrangement in series with the switch only, this could suggest a setup where only the switch is in a series configuration with the lights, but this doesn't make practical sense for multiple lights; they would still need to maintain independent operation.

Therefore, the option of "none of these arrangements" being the answer indicates that the correct arrangement for optimal functionality and safety in navigation lights would not typically align with those provided, reinforcing the concept that a parallel arrangement is ideal for controlled lighting systems.