When a pulley is used to lift a weight, it typically reduces the amount of force needed to lift the weight. This is because a pulley can change the direction of the force applied and, in some cases, create a mechanical advantage.
In a simple pulley system, the force required to lift the weight decreases, while the distance over which the force is applied (the length of rope you pull) increases. For example, if you're lifting a weight of 400 newtons and using a pulley, you might only need to exert 200 newtons of force, but you would have to pull the rope a longer distance.
Therefore, the correct response is: The force decreases, while the distance increases.