Which material should not be used for rigging slings?

The choice indicating that chain slings made from lower strength materials should not be used for rigging slings is correct. Chain slings are designed to handle heavy loads, and their strength is critical for ensuring safe lifting operations. When using materials that do not meet the required strength standards, the risk of failure increases significantly, which can lead to dangerous accidents. Lower strength materials may not withstand the forces experienced during a lift, resulting in potential injuries or damage to equipment and loads.

In contrast, wire rope slings, synthetic web slings, and steel cable slings are materials that can be utilized effectively within their specified load limits and conditions. Each of these options has properties that make them suitable for various rigging applications, contributing to safe and efficient lifting procedures when used appropriately. It's important to assess the specific requirements of the lifting task and ensure that the chosen rigging slings meet the necessary strength and safety standards.