What is a common use of a Phillips screwdriver?

A Phillips screwdriver is specifically designed to fit cross-shaped screw heads, which are commonly referred to as Phillips screws. The cross shape allows for increased torque and a better grip between the screwdriver and the screw, reducing the likelihood of the screwdriver slipping out of the screw head during use. This design is particularly advantageous for applications where a more secure fit is needed to drive screws efficiently.

The other options do not align with the primary function of a Phillips screwdriver. For instance, removing flat screws would typically require a flat-head screwdriver, while driving screws into wood can involve various types of screw drivers depending on the screw head design. Lastly, hex screws are intended to be used with hex drivers or Allen wrenches, which are designed to fit into the internal hexagonal shape of those screws. Therefore, the unique design of the Phillips screwdriver makes it the appropriate tool for driving screws specifically into cross-shaped screw heads.