Answer:
d.
24 to 32
Explanation:
Satellite programmers broadcast, signals to the satellite which they own or lease the channel space from. Uplinked signals sent by the programmers are received by the transponder located on satellite. It is a device which receives signals and transmits them back to Earth after converting the signals to frequency which could be received by the ground-based antenna. There are typically 24 to 32 transponders on a satellite.
