Answer: Transmission rate
Step-by-step explanation:
Transmission rate is measured in bits per second and it transmitted the data at the different rate across the circuit. The speed in which the data rate is transferred from one device to anther is known as transmission rate.
The transmission rate are always less as compared to signalling rate because the signalling rate contain the total data which basically include the overhead to control the information.
Therefore, transmission rate is the correct option.