What is GPS (Global Positioning System)?

• A. A system that accurately determines the precise position of something on Earth.
• B. A method for predicting climate patterns.
• C. A software to edit spatial data.
• D. A network of weather stations.

Answer: (A)

GPS, the Global Positioning System, is a satellite-based system that lets a receiver determine its exact location on Earth. It works by receiving time-stamped signals from a network of satellites orbiting the planet. By comparing these signals, the receiver can figure out its distance to at least four satellites and solve for its three spatial coordinates and the correct time. This enables precise positioning, which is why GPS is widely used for navigation, mapping, and timing.

Other options don’t fit because GPS isn’t about predicting climate patterns, editing spatial data, or operating as a network of weather stations. It’s specifically about locating position on or near the Earth.