The system of imaginary lines used to map the Earth’s surface is called?

The correct choice is the Geographical Grid, which involves a system of imaginary lines that are used to pinpoint locations on the Earth's surface. This grid includes lines of latitude and longitude that form a network across the globe. Lines of latitude run parallel to the Equator and indicate how far north or south a location is from that reference point. Lines of longitude, on the other hand, converge at the poles and indicate how far east or west a location is from the Prime Meridian. Together, these lines create a grid that allows for precise identification of any location on Earth.

Each of the other options has specific meanings but does not accurately describe the complete system used for mapping the Earth's surface. For instance, while the Coordinate System can refer to a way of describing positions within a grid framework, it is a broader term that can apply to different contexts outside of geographical mapping. The Meridian System specifically refers to the lines of longitude, which is only part of the whole geographical grid. The Cartographic System relates to the methods of representing geographic information in maps, rather than the underlying system of coordinates itself.