Which of the following is the Indian communication satellite?

INSAT

The correct answer is Option (4) → INSAT

"India has also made great strides in satellite development. Aryabhatt was launched on 19 April 1975, Bhaskar-I in 1979 and Rohini in 1980. On 19 June 1981, APPLE (Arian Passenger Payload Experiment) was launched through Arian rocket. Bhaskar, Challenger and INSAT I-B have made long distance communication, television and radio very effective. Today weather forecasting through television is a boon."