What type of signals are continuous and can take any value within a given range?

Analogue signals are characterized by their continuity and the ability to take on any value within a specified range. This means that they can represent a multitude of values at any moment in time, in contrast to other signal types that are more restricted.

For example, an analogue signal can vary smoothly and can represent physical quantities such as temperature, sound, and light intensity. When graphed, these signals display a continuous waveform rather than being made up of distinct points.

This continuous nature is what differentiates analogue signals from digital signals, which use discrete levels or binary values (0s and 1s) to represent information. Static signals, meanwhile, refer to signals that do not change over time, and discrete signals consist of separate and distinct values, lacking the flexibility that analogue signals possess in representing a range of values. Thus, the defining feature of analogue signals as continuous and capable of taking any value within a defined range makes them the correct choice in this scenario.