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Communication satellites are primarily located in the exosphere, particularly in geostationary orbits. The exosphere is the outermost layer of the atmosphere, where the air is extremely thin and eventually merges with outer space. At these high altitudes, satellites can orbit the Earth at a constant speed, staying fixed over a single point to provide continuous communication and broadcasting. (Radio communication happens using the ionosphere) ANSWER: (B) Exosphere
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Most communication satellites are positioned in the exosphere, specifically within the geostationary orbit located thirty-five thousand seven hundred eighty-six kilometers above the equator. In this region, the atmosphere is so sparse that molecules rarely collide, providing a friction-free environment for satellites to maintain their orbits for years. While some low-earth orbit satellites pass through the upper thermosphere, the high-altitude exosphere is the preferred location for those requiring a permanent view of a specific region. This placement ensures stable signal transmission for television, internet and telephone services, connecting people across the entire world with minimal interference.
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