What safety measure should be taken when handling masonry walls during demolition?

The proper safety measure when handling masonry walls during demolition is to ensure that no wall section more than one-story high stands alone without proper bracing. This is crucial for maintaining structural integrity and preventing unexpected collapses. When walls are left unbraced, they can become unstable, posing a serious risk to the workers on-site. Bracing provides the necessary support to prevent these walls from tipping or falling, which can lead to injuries or fatalities.

In demolition work, it is essential to respect the structure's engineering and physical properties. Overlooking such important safety practices can lead to catastrophic failures. The other options suggest unsafe practices that ignore the risks associated with unbraced structures, emphasizing the necessity of adhering to safety protocols like the requirement for bracing when dealing with tall masonry elements.