Artificial satellites cannot be used for which of the following?
Radio and TV broadcasting
Balancing the earth's gravity
The correct option is D Balancing the earth's gravity An artificial satellite is a man made object that is launched from Earth's surface, and is made to revolve around the earth. Man made satellites are used for many purposes:
Transmitting radio and TVsignal
Defense and military, etc.
However, it is impossible for a man made satellite to balance or regulate the earth's gravity.