In the context of devices, which option best defines "device"?

• A. An explosive, like a bomb
• B. A document
• C. A contraption used to perform specific tasks
• D. A method used to do something

Answer: (C)

A device is a piece of equipment or a tool designed to perform a specific task. That makes the description "a contraption used to perform specific tasks" the best fit, because it directly captures the idea of a tangible object built to accomplish a function. The other options refer to things that aren’t tools or machines: a document is a written record, a method is a way of doing something, and while an explosive could be a type of device in some contexts, the everyday meaning centers on the physical tool or machine.