What should never be done with rigging equipment to ensure safety?

The correct answer highlights the importance of maintaining the integrity and reliability of rigging equipment. Altering or modifying the equipment without proper guidance can lead to unforeseen risks and dangers. Such modifications might weaken the structural integrity of the equipment or may not comply with safety standards, leading to potential failures during hoisting or moving loads. Adhering to manufacturer guidelines and industry regulations ensures that the equipment maintains its designed load capacity and safety features.

The other options refer to critical issues related to rigging safety as well. Using equipment that is out of date could mean that it no longer meets safety standards or is not suitable for current load requirements. Storing equipment in a damp area could lead to corrosion or degradation over time, compromising the equipment's safety and effectiveness. Checking equipment only before use is inadequate, as regular inspections and maintenance are essential to identify any wear or damage that may have developed over time.