Answer:
its b I think I'm pretty sure
The answer is d. full-duplex transmission. This communication setup allows for simultaneous transmit and receive for both parties. As signals are able to be transmitted at the same time two way for both parties, for both directions along the same data carrier medium.
1) Use a good cam 2) Make sure you focus on it 3) Make sure you snap it at the right time.... I hope this helps!!!!!
