Q1. The main function of a GPS system is:
A Weather forecasting
B Navigation and positioning Correct
C Satellite imaging
D Space exploration
Explanation
GPS is a satellite-based system used mainly to determine location, movement and route guidance on or near Earth. Its core use is navigation and positioning, as seen in maps, transport, surveying and emergency services. Weather forecasting may use satellites and atmospheric data, but that is not the main function of GPS. Satellite imaging is done by remote-sensing satellites, not by GPS receivers. Space exploration is a broader activity involving spacecraft and missions beyond routine location services.