Explanation:

The correct answer is (a) Hardware. Peripheral devices are external physical components that connect to a computer system to expand its functionality. These devices, such as printers (for output), monitors (for visual output), keyboards (for input), and mice (for input), are tangible and can be physically touched and felt. They are essential parts of the computer's physical infrastructure, working in conjunction with the main computer unit. (b) Software is intangible; it consists of programs, instructions, and data that tell the hardware what to do. Printers and monitors are physical objects, not sets of instructions. (c) Data refers to raw facts and figures that are processed by the computer. It is the input or output of the system, not a physical device itself. (d) Information is processed, organized, and structured data that provides context and meaning. Like data, it is an abstract concept and not a physical device. (e) None of these is incorrect, as option (a) accurately classifies peripheral devices.