Determine the approximate geographic visibility of an object, with a height above the water of 85 feet (25.9 meters), for an observer with a height of eye of 60 feet (18.3 meters).

Correct Answer: Option B — 19.9 nm

Geographic range is calculated by adding the distance to the horizon for the object (85 ft = 10.7 nm) and the observer (60 ft = 9.0 nm). The sum is 19.7 nm. Among the provided choices, 19.9 nm is the closest approximation based on standard nautical tables.