Answer:
The correct option is C
Step-by-step explanation:
A simple machine is an equipment that can perform basic mechanical works. They perform simple functions such as applying a force, applying an effort, carry a small load and turning the direction of an object. Examples of simple machine include screw, lever, wedge, wheel and axle. Simple machines usually have little or no moving parts.
A can opener is used to perform a basic mechanical work (applying a force) on a can cover, causing it to get detached from the can.