Which statements correctly describe the ground control segment of the GPS system?
1. It includes a network of monitoring stations around the globe.
2. It is responsible for the synchronization of GPS satellite clocks.
3. It processes and distributes error correction information to GPS users.
4. It consists only of military-operated facilities.
1
1 and 2
2
1, 2, and 3
3
2, 3, and 4
4
1, 3, and 4
5
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