What is the difference between an analog signal and a digital signal?

Explanation

The answer is (b) Digital signal.Analog signals are continuous signals that represent information by continuously changing some property of the signal, such as voltage, amplitude, or frequency. An example of an analog signal is a radio wave carrying sound information. The sound wave itself is a continuous variation in pressure over time, which is then translated into a continuous variation in voltage or radio frequency.Digital signals are discrete signals that represent information using a series of discrete values. These values are typically binary, meaning they can only be 0 or 1. Digital signals are often used in computer systems and communication networks because they are less susceptible to noise and interference than analog signals.