Why should loads never be dragged across the boom?

Dragging loads across the boom poses a significant risk to personnel and has the potential to cause equipment failure. This is primarily because when loads are dragged, they create unpredictable movements and balance issues, which could lead to accidents or slips that endanger workers nearby. Additionally, dragging can introduce unnecessary stress and strain on the boom and associated lifting equipment, leading to premature wear or potential failure of mechanical components.

In contrast, other choices do not accurately reflect the critical safety implications associated with dragging loads. While equipment inefficiency could happen, it is not the primary concern in this scenario. Improving work speed is irrelevant if safety is compromised, and while following operational requirements is essential, the health and safety of personnel take precedence. Thus, the emphasis on worker safety and the integrity of equipment makes that choice the most appropriate answer.