Final answer:
A screw is the mechanical device formed by wrapping an inclined plane around a cylinder or post. It's used in simple machines for its mechanical advantage. The correct option is d).
Step-by-step explanation:
The mechanical device formed by wrapping an inclined plane around a cylinder or post is known as a screw. The screw is essentially an inclined plane (a slanted surface used to raise objects) that spirals around a cylinder.
The distance between the threads of the screw is called the pitch (P), and this feature is crucial in determining the screw's ideal mechanical advantage (IMA), which is a measure of the efficiency of the simple machine.
In practice, common examples of screws include wood screws and the use of a screwdriver as the lever part to turn the screw. Option d) is the correct one.