What devices allow a person to interact with a computer?

Interacting with a computer involves various input and output devices that facilitate communication between the user and the system. The correct answer encompasses essential tools that allow users to input data into the computer and receive feedback.

Touchscreens serve as both input and output devices, enabling users to interact directly with what is displayed on the screen through touch. Keyboards and mice are traditional input devices that allow users to enter text and commands or navigate through the system easily. Monitors act as output devices that display information, graphics, and visual responses. Together, these devices create a seamless user experience, allowing for effective interaction with the computer.

Other options include devices that either do not facilitate direct interaction or serve different functions. For example, modems and routers are primarily used for network connectivity rather than direct user interaction. Hard drives and graphics cards are critical hardware components for data storage and rendering images, respectively, but they do not provide a way for users to input or receive information directly. Printers and scanners are useful for handling physical documents but are limited to output and input for paper-based information rather than direct interaction with the computer interface.