Which of the following describes small circles?

The description of small circles is accurately represented by the choice that states they are parallels of latitude other than the equator. Small circles are defined as circles on the surface of a sphere that do not pass through the center of the sphere. Unlike great circles, which are the largest possible circles that can be drawn on a sphere and represent the shortest distance between two points on the globe, small circles diminish in size as they move away from the equator.

For instance, lines of latitude like 30°N or 45°S are considered small circles because they are not as extensive as the equator, which is a great circle. Understanding this distinction is crucial for navigation and for interpreting global positioning systems, as it underscores how different circles relate to the globe's geography and navigation routes. The other options pertain to different concepts related to navigation but do not accurately define small circles.