The correct answer is D. Hardware includes all devices involved in processing information including the central processing unit, memory and storage.
Option A is incorrect because it only includes devices used to input data into a computer. Hardware also includes devices used to output data, such as monitors and printers.
Option B is incorrect because it only includes sets of instructions that a computer runs or executes. Hardware also includes physical devices, such as the central processing unit, memory, and storage.
Option C is incorrect because it only includes the computer and all the devices connected to it that are used to input and output data. Hardware also includes devices that are not connected to the computer, such as the power supply.
Option E is incorrect because it is not a valid option.