Which ladder type features folding hooks at the top end for securing to a roof?

The ladder type that features folding hooks at the top end for securing to a roof is designed specifically for safety and stability during firefighting operations. Roof ladders have these hooks to allow firefighters to secure the ladder directly to the roof structure, preventing it from slipping and providing a solid foothold while they perform rescue or firefighting tasks. This design element is crucial for maintaining balance and safety on inclined surfaces, which is often encountered on roofs.

Extension ladders, while versatile and common in firefighting, are not equipped with hooks and are primarily used for reaching higher areas. Folding ladders are generally smaller and designed for compact storage and transport, lacking the specific features of a roof ladder. Combination ladders serve multiple purposes but do not specialize in securing to roofs as roof ladders do. Therefore, the presence of the folding hooks on the roof ladder is what makes it the correct choice in this context.