The correct tool for driving a nail is...

The claw hammer is specifically designed for driving nails into wood and is the most suitable tool for this task. Its flat, striking face allows for efficient penetration of the nail, while the curved claw on the opposite side provides the functionality needed for removing nails if necessary. This dual-purpose design makes the claw hammer versatile and a staple in both construction and woodworking.

Other tools such as a flathead screwdriver, wrench, and pry bar are not intended for driving nails. A flathead screwdriver is meant for turning screws, while a wrench is used for tightening or loosening nuts and bolts. The pry bar, though useful for prying items apart, is not designed for driving nails into surfaces. This understanding highlights the functionality and intended use of the claw hammer in comparison to other tools.