A useful tool for loosening and tightening multiple or unknown sized hex bolts. Can be adjusted to fit both metric and standard sizes.

• A. Screw Driver
• B. Ratchet Set
• C. Adjustable Wrench
• D. Wood Carving Set

Answer: (C)

Adaptability to different hex bolt sizes is what this question is about. An adjustable wrench can loosen and tighten a variety of hex bolts because its jaw width is adjustable, letting you match the grip to the bolt head whether the bolt is metric or standard. This single tool eliminates the need to carry many sockets or wrenches for different sizes, which is especially handy when you aren’t sure which size you’ll encounter. A screwdriver is meant for screws with slots or Phillips heads, not hex bolts. A ratchet set needs the correct socket for each size, so while it’s versatile, it doesn’t adjust on-the-fly to an unknown bolt size. A wood carving set is unrelated to fasteners.