Which of the following statements about mobile ladder use is correct?

Mobile ladders must be positioned on level surfaces to ensure stability and safety while in use. When a mobile ladder is placed on an uneven or unstable surface, it increases the risk of tipping and can lead to serious falls. Level surfaces provide a solid foundation that helps maintain the integrity of the ladder's structure and support the weight of the user, thus mitigating the potential for accidents.

The other statements fail to prioritize safety measures critical to ladder use, which is why they do not hold true. For instance, asserting that mobile ladders can be used without any inspections overlooks the importance of routine checks for structural integrity and proper functionality. Allowing mobile ladders to be on unstable surfaces directly contradicts established safety protocols, and stating that they can be secured with weight on the lower step disregards safe practices for maintaining balance and stability.