How does the structure of a digital signal differ from that of an analog signal?

The structure of a digital signal is fundamentally characterized by its use of discrete values to represent data, which is why the correct response identifies this characteristic. Digital signals operate in a binary format, utilizing combinations of "0s" and "1s" to convey information. This discrete nature allows for more straightforward representation, processing, and error detection than analog signals, which vary continuously.

In contrast, analog signals represent data through continuous waveforms that can take on any value within a range. This continuous variation leads to additional complexities in measurement and processing, as analog signals can be more susceptible to noise and distortion.

The discrete values in digital signals make it easier to store, transmit, and manipulate data using digital circuits and systems, which has driven the widespread adoption of digital technology in various applications. This clarity in representation is a key advantage of digital over analog signals.