A student researching GPS technology has taken the following notes:
• GPS uses 24 satellites orbiting Earth • The system was developed by the US military in the 1970s • GPS became available for civilian use in 1983 • It enables location accuracy within a few feet • Applications include navigation, agriculture, and emergency services
The student wants to explain how GPS works. Which choice most effectively uses relevant information from the notes?
GPS technology was developed by the US military in the 1970s.
GPS uses signals from 24 orbiting satellites to determine precise locations on Earth, accurate within a few feet.
GPS became available for civilian use in 1983, expanding beyond military applications.
GPS applications include navigation, precision agriculture, and emergency services.
Correct Answer: B
Choice B. 24 satellites determining precise locations explains how GPS works.