What is one nautical mile equivalent to in kilometers?

One nautical mile is defined as the distance corresponding to one minute of latitude. It is universally accepted that one nautical mile is equivalent to approximately 1.852 kilometers. This conversion is based on the geometry of the Earth, where the nautical mile is directly related to the Earth's circumference; each minute of latitude corresponds to one nautical mile.

Considering this definition, the answer of 1.85 kilometers is the closest and most accurate representation of one nautical mile in kilometers, making it the correct choice. The other options do not provide an accurate conversion of nautical miles to kilometers, as they do not align with the well-established measurement of 1.852 kilometers per nautical mile.