Discussion
Demodulation is a process
Answer: B
Demodulation recovers the modulating (message) signal from the modulated carrier, and the key describes it as filtering the carrier, that is, getting rid of the carrier so that the baseband signal remains. It is done at the receiver, not at the transmitter. It is the reverse of modulation and not similar to it, and removing the sidebands would remove the message itself. So the second option is the keyed answer.
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