Which of the following best describes first aid measures that must be included on an MSDS?

The correct choice highlights that first aid measures included on a Material Safety Data Sheet (MSDS) are focused on immediate remedies and preventive measures for exposure to hazardous materials. This information is critical for ensuring a prompt response in case of an accidental exposure to a chemical.

In emergency situations, understanding the first aid measures helps responders effectively address the health and safety risks posed by the chemical. This includes steps such as flushing the affected area with water in case of skin contact or advising inducement of vomiting for oral ingestion, as applicable. Including this information on the MSDS ensures that anyone who might be exposed to the chemical knows how to react swiftly and appropriately to mitigate injury or illness.

Other options cover relevant information for chemical safety but do not specifically pertain to immediate first aid measures. Long-term health effects, storage instructions, and supplier inventories are important, but they do not provide the urgent action steps required to deal with exposure incidents effectively.