At a minimum, what should a non-powered canoe or kayak display in reduced visibility?

In reduced visibility, a non-powered canoe or kayak should display an all-around white light to ensure visibility and safety on the water. This is in accordance with navigational rules that require vessels to have proper lighting to signal their presence, especially in conditions where visibility is compromised, such as fog, rain, or during nighttime. The all-around white light can be seen from all directions, making it effective for alerting other boaters to the vessel's location. This is crucial in preventing collisions and ensuring safe navigation for all watercraft in the area.

While other options like flares, colored lights, or a whistle may serve specific purposes in emergency situations or signaling, they do not fulfill the broader requirement for visibility outlined in maritime navigation rules for non-powered vessels in reduced visibility conditions.