Question

what is a personal fall - arrest system?
a full - body harness system employees wear and anchor to a point on the roof
guardrails around the perimeter of a roof
a belt a worker wears around his or her waist to keep him or her from reaching the edge of a roof
a person who watches all roofing workers to grab them if they start to fall

Explanation:

A personal fall - arrest system is designed to protect workers from falling. A full - body harness (not just a waist belt) is a key component. Guardrails are a different type of fall protection (passive protection around the perimeter), and a person watching is not a standard system. The first option correctly describes a personal fall - arrest system with a full - body harness and an anchor.

Answer:

A. A full - body harness system employees wear and anchor to a point on the roof