Why might using unsuitable materials for barriers pose a risk?

Using unsuitable materials for barriers may fail to provide adequate separation, which is crucial in maintaining safety in indoor places of assembly. Barriers serve the purpose of controlling crowd flow, ensuring that different areas within a venue are adequately separated to prevent accidents or hazards. If the materials used are not appropriate—whether due to insufficient strength, flexibility, or visibility—they may not effectively contain crowds or prevent individuals from entering unsafe areas. This lack of effective separation can lead to overcrowding, confusion, or dangerous encounters, undermining the primary goal of safety and emergency management in such settings.

The other choices, while they may present certain advantages, do not address the fundamental safety concern. Enhancing visual appeal, reducing costs, or ease of assembly might seem beneficial; however, if the barriers do not perform their intended function of separation adequately, then they cannot be considered suitable for safety purposes.