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Answer:Option (1)Explanation:A GPS is a satellite-based, radio-navigation system which is commonly used by the geographers to determine the exact location on the earth's surface. There are more than 30 satellites that constantly orbits around the earth, andit transmits signals that are recorded in the GPS receiver and it also implements the triangulation method that helps in finding out the location in more detailed information. It has various uses such as for defense purposes, commercial uses and also used in mobile phones.Thus, the correct answer isoption (1)....