Define "longitude."

Longitude refers specifically to the angular measurement that indicates how far a point is located east or west of the Prime Meridian, which is set at 0 degrees longitude in Greenwich, England. It is measured in degrees, with the full circumference of the Earth being 360 degrees. This system allows for navigation and mapping by providing a coordinate system that, when combined with latitude, can pinpoint any location on the Earth's surface.

Understanding longitude is crucial for various applications, including navigation, as it helps determine the local time difference in relation to the Prime Meridian and enhances geographic literacy by offering a means to compare locations in terms of their east-west positioning. In contrast, latitude is the measurement of how far north or south a point is from the Equator, making option B distinctly aligned with the definition of longitude.