Correct option is B
A geostationary satellite orbits the Earth at an altitude of approximately 36,000 km (or precisely 35,786 km) above the equator. At this height, the satellite has an orbital period equal to the Earth's rotational period (24 hours), making it appear stationary from any point on the Earth's surface. This property is ideal for telecommunications, weather monitoring, and broadcasting, as the satellite maintains a fixed position relative to the Earth. The specific altitude ensures the satellite's orbital velocity matches the Earth's rotational velocity, thus providing continuous coverage over the same geographical area.
