Question

what could have prevented this fall? select the best option. a scaffold should have been placed nearby. the workers should have been wearing personal fall arrest systems. an extension ladder should have been placed nearby.

Explanation:

Personal fall arrest systems are designed to stop a fall and minimize the impact forces on a person. A scaffold or extension ladder placement might not directly prevent a fall in all cases like a personal fall arrest system would for an individual worker.

Answer:

The workers should have been wearing personal fall arrest systems.