When making up a tow connection, you should use __________.

Correct Answer: Option D — screw pin shackles

Screw pin shackles are the industry standard for towing connections because they provide a secure, threaded closure that prevents accidental opening under vibration or load. Unlike round pin shackles, which rely on cotter pins that can shear or fall out, screw pins offer a reliable, robust connection for heavy-duty towing operations.