Which item is NOT included in a fall-arrest system?

• A. full-body harness
• B. lineman's-style belt
• C. tree strap
• D. helmet

Answer: (D)

Fall-arrest systems are designed to stop a fall safely by using a secure body support, a way to connect to a solid anchor, and an attachment that distributes the arrest forces. The full-body harness is the central piece because it spreads the load across the body to minimize injury. A tree strap provides a dependable anchor point to attach the system to a fixed object like a tree. A lineman’s-style belt shows up in climbing contexts but isn’t the ideal or standard component for arresting a fall in modern setups; it isn’t designed to distribute impact forces as effectively as a full-body harness. A helmet protects the head from impacts and falling objects, but it does not participate in stopping a fall itself, so it is worn separately from the fall-arrest mechanism. For that reason, the helmet is not included in a fall-arrest system.