Final answer:
When purchasing chemicals, pesticides, or hazardous materials, it is important to consider their environmental impact and safety. Option C - Consider environmental impact and safety - is the best choice.
Step-by-step explanation:
When purchasing chemicals, pesticides, or hazardous materials, it is important to consider their environmental impact and safety. Option C - Consider environmental impact and safety - is the best choice. This means choosing chemicals that are made from renewable raw materials, avoiding chemical derivatives that generate waste, and using safer solvents. By considering the environmental impact and safety of the chemicals, you can make choices that are better for both the environment and human health.