Which of the following paths is most likely to support long-distance propagation on 160 meters?
A path entirely in sunlight
Paths at high latitudes
A direct north-south path
A path entirely in darkness✓Correct answer
Explanation
On 160 metres the limiting factor is D-region absorption, which is created by sunlight and disappears at night, so a path lying wholly in darkness is the one that can carry the signal a long distance. A sunlit path is absorbed, high-latitude paths add auroral absorption on top of that, and a north-south heading is not by itself decisive.