Correct option is A
Modern TV screens are primarily made of Liquid Crystal Displays (LCDs), which use liquid crystals to manipulate light and create images. LCDs function by blocking or allowing light to pass through pixel layers in combination with backlighting. Another common technology is LED (Light Emitting Diode), where LEDs provide backlighting for LCD screens, enhancing brightness and contrast. Thin Film Transistor (TFT) technology is often used in combination with LCDs to control each pixel individually, improving resolution and image quality. Cathode Ray Tubes (CRTs) are now obsolete in modern televisions and have been replaced by the more energy-efficient and slimmer LCD/LED screens.
