What is the function of a wrench?

• A. To turn nuts, bolts or screws
• B. To measure lengths
• C. To cut metal
• D. To pry apart components

Answer: (A)

A wrench is a hand tool designed to turn fasteners. It fits onto the head of nuts, bolts, or screws and provides leverage to apply torque, allowing you to tighten or loosen them. By converting the force you push or pull into rotational force around the fastener’s axis, a wrench makes it possible to move fasteners that resist by hand. There are different types and sizes to match various fastener shapes, but the core idea is the same: to turn fasteners. Tools used for measuring lengths, cutting metal, or prying apart components perform other tasks, not the turning of fasteners.