Final answer:
The statement describes Geostationary satellites, which remain stationary above a single point on Earth due to their orbital motion matching Earth's rotation along the equatorial plane.
Step-by-step explanation:
The statement 'Their orbital motion matches the earth's rotation and stays above the same sight' refers to Geostationary satellites. These satellites are placed in the Earth's equatorial plane and move in the same direction of Earth's rotation, which keeps them stationary above a single point on the Earth's surface. This unique characteristic makes geostationary satellites ideal for communication, broadcasting, and weather observation purposes.
Unlike geostationary satellites, Polar satellites orbit the Earth in a path that passes over the planet's poles, GPS satellites are placed in medium Earth orbit to provide global coverage, and Space stations like the International Space Station circle the Earth approximately every 90 minutes and are not geostationary.