Which of the following is a reflective surface made up of thousands of tiny mirrors, each representing a single pixel?

The correct answer is DLP, which stands for Digital Light Processing. DLP technology utilizes a digital micromirror device (DMD), which is a reflective surface made up of thousands of tiny mirrors. Each mirror on the DMD corresponds to a single pixel in the image being projected. When the mirrors tilt, they reflect light in different ways to create the desired colors and images on the screen. This technology is widely used in projectors and rear-projection televisions because it can produce bright, high-quality images.

In contrast, LCD (Liquid Crystal Display) and OLED (Organic Light Emitting Diode) technologies do not use tiny mirrors to create images. LCD relies on liquid crystals and a backlight to control light passing through, while OLED uses organic compounds that emit light when an electric current is applied. LED (Light Emitting Diode) is a type of LCD that uses LEDs for backlighting but again does not involve a reflective surface with mirrors like DLP does. Thus, DLP is specifically defined by its use of these tiny mirrors, making it the correct response.