What type of ladder is adjustable in length?

The multi-section ladder is adjustable in length because it is designed with two or more sections that can extend or retract. This feature allows firefighters to adjust the ladder to various heights depending on the needs of the situation. Multi-section ladders are particularly valuable in firefighting and rescue operations, as they can reach taller buildings or structures that may be difficult to access with a single fixed length.

Other types of ladders, like straight ladders, are typically a single length and do not offer the flexibility needed for height adjustments. Fixed ladders are permanently installed and do not adjust at all, while folding ladders may offer some compactness for storage but do not extend to varying heights like a multi-section ladder does. Thus, the multi-section ladder stands out for its versatility and utility in emergency scenarios.