Final answer:
GPS is the system that shows a user's location on a map and tracks movements as they travel, making it essential for modern mapping programs.
Step-by-step explanation:
The correct answer to the student's question is D. GPS. The Global Positioning System (GPS) is a satellite-based navigation system that allows users to determine their exact location (latitude and longitude) on Earth. The GPS is capable of showing the user's location on a map and tracking their movements in real-time as they travel. This technology is integrated into various devices such as smartphones, vehicles, and other handheld devices, making it a critical component of modern navigation and mapping programs.
While the accelerometer and gyroscope are sensors that can assist with motion detection and orientation of the device, and geotracking can track the movement of objects or people over time, it is specifically the GPS that provides the accurate location and movement display on mapping software.