Question

if working on stairs, which articulated ladder configuration should be used? select the best answer:
o stepladder in 90 degree position
o single ladder configuration
o stepladder in staircase configuration
o stepladder configuration

Explanation:

When working on stairs, a step - ladder in staircase configuration is designed to fit the contour of the stairs, providing stability and safe working conditions. A 90 - degree position of step - ladder is not suitable for stairs. A single ladder configuration may not adapt well to the step - by - step nature of stairs. A general step - ladder configuration without specific adaptation to stairs is also not ideal.

Answer:

step - ladder in staircase configuration