The use of endless __________ manlifts in construction shall be prohibited.

The correct choice specifies that the use of endless belt-type manlifts in construction is prohibited. This prohibition is based on safety considerations, as belt-type manlifts can present unique hazards, particularly related to the potential for slipping, lack of stability, and difficulty in maintaining proper control during operation.

Belt-type manlifts often lack the structural support and safety features found in other types of manlifts, making them less reliable in maintaining the safety of workers at heights. The risk of injury from falls can be higher with these devices, as they might not effectively hold the weight or provide the necessary grip and traction for workers.

In contrast, chain-type manlifts, wire-type manlifts, and nylon-type manlifts typically come with better safety standards, design features, and operational controls to ensure safer usage. These alternatives provide mechanisms that offer stability and security, which are critical on construction sites where worker safety is paramount.