Which object is used to reach distances high in the air?

Directions: Read the passage and answer the question that follows.

Firefighters
Fire is to blame for countless lives and billions of rupees each and every year. Firefighters help protect people and their property from injury and damage. Firefighters put their life on the line every time they respond to a call.
While on duty, firefighters must be ready to respond in a matter of minutes to just about any disaster that may occur. At every fire scene, superior fire officer takes command and dictates the jobs of all the personnel at the scene. Some personnel man hose lines to hydrants. Others manually operate the pumps to send water to the hoses. Teams of firefighters also operate ladders used to reach distances high in the air.