What does the demodulation process achieve?

The demodulation process is crucial in communications as it refers to the technique used to retrieve the original information-bearing signal from a modulated carrier wave. When a signal is modulated, it is altered in such a way to encode information, typically for transmission over a communication medium. Demodulation effectively reverses this process, allowing the receiver to convert the modulated signal back into a format that can be understood and utilized, which is known as the baseband information.

The correct choice highlights that demodulation extracts this baseband information, which can be voice, data, or video, depending on the application. This process is essential for ensuring that the intended message can be accurately decoded and interpreted by the receiving equipment.

The other options address different aspects of signal processing or transmission but do not accurately describe the demodulation process, as enhancing signal quality, converting audio to video formats, and amplifying carrier frequencies are not inherent functions of demodulation.