Which of the following is NOT a consideration when preparing to use hazardous materials?

The correct answer highlights a key principle in safely handling hazardous materials: relying solely on verbal instructions can be insufficient and unsafe. This option stands out because effective preparation for using hazardous materials involves thorough communication and documentation. Written instructions, safety data sheets (SDS), and proper training provide essential, clear, and traceable information regarding the handling, usage, and potential hazards of these materials.

In contrast, familiarity with the materials' characteristics, the correct transportation methods, and proper labeling and marking of containers are all critical safety considerations when dealing with hazardous materials. Understanding the properties of the materials ensures that the handler is aware of risks such as flammability, reactivity, or toxicity. Correct transportation methods ensure that materials are moved safely to prevent leaks or spills, and proper labeling helps to communicate dangers to those who might come into contact with the materials, ensuring compliance with safety regulations.

In summary, the reliance on verbal instructions alone is insufficient because it does not ensure that all necessary information is communicated effectively. Comprehensive practices that involve written documentation and training are essential to maintaining safety while working with hazardous materials.