Correct option is C
The working of an LED (Light Emitting Diode) system is based on the principle of Electroluminescence. Electroluminescence is the phenomenon where a material emits light in response to an electric current or a strong electric field. When a current flows through the semiconductor material in the LED, electrons recombine with holes, releasing energy in the form of photons (light).
LEDs are widely used in electronic devices, lighting, and display systems due to their energy efficiency and long lifespan.
