The need for modulation is .

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to decrease the intensity of audio signal

to increase the frequency of audio signal

to increase the intensity of audio signal

to transmit audio signal to large distances

answer is C.

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Detailed Solution

the streangth of the message signal should be increased so that it can travel longer distances. This is where modulation is essential. the most vital need of modulation is to enhance the strength of the signal without affecting the parameters of the carrier signal

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