🔍 Key Concepts

• Tool design purpose – think about why a manufacturer would change from a round shank to a square shank on a screwdriver • How torque is applied – consider how you can get extra turning force on a tool when your hand alone isn’t enough • Safe vs. unsafe uses of screwdrivers – which uses are considered misuse that manufacturers generally do NOT design for

💭 Think About

• When you put a square shape on a tool that usually has a round shaft, what extra capability does that shape give you? • Which of these choices would most logically use the flat faces of a square shank? • On a vessel or in a shop, how might you get more leverage on a stuck screw without redesigning the handle?

✅ Before You Answer

• Ask yourself which option directly involves gripping or turning on flat sides of the shank • Eliminate any choices that mainly relate to impact or prying rather than controlled turning force • Picture placing another tool on the shank – which answer best fits how a square cross‑section would be used?