Answer:
The answer is screw x
Step-by-step explanation:
A screw is an inclined plane that spirals around a cylinder. To help visualize this, imagine a playground slide that sprirals around a central pole. The threads on a screw are the outside edge of a plane that wraps around the screw's central axis.
The closer together a screw's threads are, the longer the inclined plane. The longer the inclined plane, the less effort force required to turn the screw. The screw in image X requires the least amount of effort force to turn because its threads are the closest together.