Which statement best describes analog signals?

• A. It is always a discrete value
• B. It has values in between
• C. It is made of 0s and 1s
• D. It cannot vary

Answer: (B)

Analog signals are continuous in both time and amplitude, meaning they can take an infinite number of values within a range. Because of this, values exist between any two points, allowing the signal to vary smoothly rather than jumping in fixed steps. That’s why describing it as having values in between is the best fit. In contrast, digital signals are represented by discrete levels—often just 0 and 1—so they don’t have true in-between values. The idea that an analog signal cannot vary is also false, since analog signals can change continuously over time.