When handling packages of explosives, you must:

Answer: C — never use hooks or other metal tools

When handling packages of explosives, the correct action is to never use hooks or other metal tools. This is crucial because metal objects can create sparks, which may ignite the explosives and lead to an accidental detonation. The risk of causing a reaction from the explosive material is significantly increased when metal tools are introduced, particularly if they come into contact with the packages themselves. Safely handling explosives also involves understanding the materials and equipment that can lead to potentially dangerous outcomes. Safety is paramount in HAZMAT operations, and using non-conductive and non-sparking materials is critical when dealing with hazardous materials such as explosives. Proper training and adherence to safety protocols ensure that the risks associated with handling these materials are minimized.