Final answer:
Frequency shift keying (FSK) is the modulation technique where carrier frequencies' discrete values are used to transmit binary data, offering high reliability and efficient transmission, which is commonly used for digital data like cell phone conversations and television signals. Therefore , the correct answer options is c)
Step-by-step explanation:
The modulation technique in which discrete values of carrier frequencies are used to transmit binary data is known as frequency shift keying (FSK). Unlike amplitude modulation (AM) and phase modulation (PM), which respectively involve varying the amplitude and phase of the carrier wave, FSK varies the frequency of the carrier wave to represent the binary digits (bits) 0 and 1.
This method offers high availability and disaster recovery because it can be more reliable over certain types of communication channels where signal strength can vary, as the variations in frequency can still be distinguished even with weak signals.
Digital data, such as cell phone conversations and television signals, are commonly transmitted using this method, allowing clearer transmission and the capacity for data compression algorithms to be employed.