Question

question 6 of 9
this type of ladder has pulleys, ropes and ladder locks to allow for height adjustment.
choose an option below
fixed ladder
extension ladder
stepladder

Explanation:

Fixed ladders are stationary and cannot be adjusted in height. Stepladders are self-supporting with a fixed A-frame structure and no height-adjusting pulleys/ropes. Extension ladders use pulleys, ropes, and locking mechanisms to extend their length for height adjustment, matching the description.

Answer:

extension ladder