Final answer:
Technician A is correct. Aluminum ladders are lightweight and easy to maneuver, reducing the risk of back injury. However, Technician B is partially correct as aluminum ladders can conduct electricity if they make contact with a power source.
Step-by-step explanation:
Technician A is correct. Aluminum ladders are often preferred on construction sites because they are lightweight and easy to maneuver, which reduces the risk of back injury.
They are also durable and weather-resistant. However, Technician B is also partially correct.
Aluminum is a good conductor of electricity, so if an aluminum ladder makes contact with a power source, it can conduct electricity.
Therefore, it is important to take precautions when using aluminum ladders near electrical sources.