Which feature of the Zener Diode makes it suitable for use in compact circuits and mobile phone applications?

Correct option is C

​$$\text{A Zener diode is widely used in compact circuits and mobile phone applications because it can:} \\[8pt]\bullet \ \text{Maintain a nearly constant output voltage over a wide range of load currents and input voltage variations} \\[4pt]\bullet \ \text{Operate reliably in the reverse breakdown region} \\[4pt]\bullet \ \text{Provide simple and compact voltage regulation without complex circuitry} \\[8pt]\text{This makes it ideal for low-power, space-constrained electronic devices.}$$​​