Answer:
ASK
Explanation:
The correct answer is ASK which denotes Amplitude Shift Keying. This is essentially a type of amplitude modulation which represents the binary data that comes varied forms right in the amplitude of a signal.
Now the reason why It is the most susceptible technique to noise is due to the fact that between frequency, phase & amplitude, amplitude is the one that is most susceptible to being affected by noise when compared to the other two.
The answer is True there is a keyboard like that here
