What is a safe practice regarding the positioning of ladders?

The correct answer emphasizes the importance of ladder stability and worker safety. When a worker is on a ladder, any movement can increase the risk of losing balance, resulting in falls or injuries. By ensuring that ladders are not moved while in use, workers can maintain a safe working environment, allowing them to focus on their tasks without the distraction or danger of instability.

Additionally, safety regulations and best practices dictate that ladders must be secured and stable before a worker ascends. This principle is crucial to prevent accidents that can occur from unexpected shifts or movements while the worker is elevated. The other options, while they might seem convenient in certain contexts, compromise safe ladder use and neglect core safety guidelines established to protect workers in various environments.