When transporting hazardous waste, you must have the word "___" before the name of the material on the bills.

In the context of transporting hazardous waste, the term "WASTE" is specifically required to be included on the shipping papers, such as bills of lading. This designation serves an important purpose by clearly identifying the nature of the material being transported. The explicit use of the word "WASTE" ensures that handlers and carriers recognize the materials as hazardous waste, which have specific regulatory requirements and handling procedures to mitigate risks to health and the environment.

The emphasis on identifying the substance as waste is crucial for compliance with environmental regulations and safety protocols. It alerts everyone involved in the transport process, including emergency responders, about the nature of the material, which is vital for ensuring proper handling and disposal.

Discussions surrounding the other terms highlight that while they denote various levels of danger or hazard, none have the specific regulatory requirement that the word "WASTE" has when referring to hazardous waste transportation. This is why "WASTE" stands out as the correct choice in this scenario.