Correct option is A
In metalworking, compressive force is applied in various forging processes to shape metal. Among the given options, Rollers are specifically used in processes like rolling, where continuous compressive force is applied to deform metal into sheets, bars, or other shapes.
In rolling, metal is passed through rotating rollers, which apply uniform compressive forces, reducing thickness and increasing length. This method is widely used in industrial forging and metal shaping.
A swage block is used for shaping, bending, and forming metal, but it does not apply continuous compressive force.
Fullers are used to concentrate force on specific areas of a workpiece, not for general compressive force application.
