which of the following functions shows the user’s location on the map as well as movements on the map as they travel?

While using a mapping program, which of the following functions shows the user’s location
on the map as well as movements on the map as they travel?

A.
Accelerometer

B.
Geotracking

C.
Gyroscope

D.
GPS

Explanation:

Reference:
http://en.wikipedia.org/wiki/Global_Positioning_System