What device consists of one or more pulleys with rope for lifting heavy objects?

The correct answer identifies the block and tackle as the device that incorporates one or more pulleys with ropes, specifically designed for lifting heavy objects. A block and tackle system works by distributing the weight of the load across multiple pulleys, which reduces the amount of force needed to lift the object. This mechanical advantage allows for the lifting of significantly heavier loads than one could lift unaided.

In a block and tackle, each pulley (or "block") changes the direction of the force applied to the rope, and when multiple pulleys are used together, they significantly increase the efficiency of lifting. The arrangement of the ropes and pulleys enables the user to exert less effort to lift a load, making it easier to move heavy objects in various logistics and construction scenarios.

The other options represent lifting devices or mechanisms but do not specifically rely on the combination of pulleys and ropes to provide the same mechanical advantage in lifting heavy loads as a block and tackle system does.