Which ladder resembles a small extension ladder when it is closed, but lacks pulleys or a halyard?

The A-frame ladder, also known as a step ladder, is designed to be self-supporting and features two sets of rungs that create a triangular shape when opened. This configuration allows for easy climbing and stable access to elevated areas. When closed, the A-frame ladder resembles a smaller version of an extension ladder in that it can easily be transported and stored without the complexity of pulleys or a halyard system. This makes it user-friendly and practical for various tasks around the fire station and during rescue operations.

The other types of ladders mentioned have different characteristics; for example, extension ladders are designed to extend in height using pulleys and halyards, while wall ladders are typically fixed and require mounting, and step ladders have varying features but primarily focus on being freestanding without resembling an extension ladder.