Important PointsThe following table is showing the important information about the given things,(Devices)(Example) Input devices JoysticksThe joystick is also a pointing device, which is used to move the cursor position on a monitor screen. It is a stick having a spherical ball at both lower and upper ends. The lower spherical ball moves in a socket. The joystick can be moved in all four directions. Direct dataRadiofrequency identification readers. A radio frequency identification (RFID) reader is a device that collects data from RFID tags, which are used to track particular things. Data is transferred from the tag to the reader through radio waves. Output deviceSpeakers. An output device allows data to be transmitted by the computer in a human-friendly form, for example, the sound being played through a speaker. Speaker - Converts digital signals into audible sound waves. Data backup DVD. DVD stands for digital versatile disc and is a type of optical disc used for data storage and multimedia platforms. A DVD drive, like a CD drive, employs a laser to read digitized (binary) data encoded on the disc in the form of small holes tracing a spiral route from the disc's center to its outer border. Therefore, the correct answer is A - 3, B - 1, C - 4, D - 2