What is the appropriate measure for ensuring safety on scaffolds?

The appropriate measure for ensuring safety on scaffolds involves securing them to the building. This practice is essential to prevent the scaffolds from tipping or collapsing, especially when they are subjected to dynamic loads or high winds. Securing scaffolds ensures that they remain stable and fixed in place, minimizing the risks associated with working at heights.

While tagging scaffolds as safe, color coding them, and limiting access to supervisors may contribute to overall safety in certain contexts, they do not address the primary concern of physical stability. Tagging can indicate that a scaffold has passed inspection, but it does not ensure that the structure is secure. Color coding can help with visual identification but does not impact physical safety. Limiting access to supervisors alone does not protect workers from the inherent risks of scaffold instability. Thus, securing scaffolds to the building stands out as the most critical measure for ensuring safety.