What are the two types of portable ladders?

The correct answer identifies the two primary types of portable ladders used for various tasks. Step ladders are self-supporting, featuring a broad base and steps to allow the user to safely reach elevated surfaces. These ladders are particularly useful for tasks such as painting, changing light bulbs, or accessing high shelves, as they do not require any support from a wall or other surface.

Extension ladders, on the other hand, are designed to be leaned against a structure. They can be extended to achieve greater heights, making them suitable for tasks that require reaching rooftops or high siding. The flexibility in extension allows users to adjust the ladder's length based on specific height requirements, providing versatility in construction and maintenance scenarios.

Recognizing these types of ladders is crucial for understanding their proper use in safety compliance. Each ladder type serves distinct purposes and has unique features that ensure worker safety in various environments.