Final answer:
The cost of the chemical is not included in right-to-know training; the focus of the training is on safety and health information, such as emergency procedures, SDS location, and PPE.
Step-by-step explanation:
The item not included in right-to-know training about a chemical is d) the cost of the chemical. Right-to-know training typically includes important safety and health information, such as emergency procedures in the event of a spill or exposure, the location of Safety Data Sheets (SDS), and the recommended personal protective equipment (PPE). Knowledge of the cost of the chemical is not relevant to safety procedures and handling practices. Employers are responsible for informing workers about chemical hazards and ensuring they understand how to react in case of emergencies, including where to find safety equipment in the laboratory and how to properly dispose of chemicals to prevent environmental harm.