C. Safety Data Sheets (SDSs) and labels.
Explanation: The HCS developed by OSHA tries to better or upgrade the quality and stability of guidelines regarding the use of hazardous substances in the workplace, making it safer for workers who handle hazardous or risky chemicals.
Safety Data Sheets (SDSs) and Labels are the areas to be changed.
1. Labels: Chemical manufacturers and importers are supposed to give a label that comprises of a signal word, pictogram, and hazard statement for each hazard class and category.
2. Safety Data Sheets: Safety data sheets is also known as material safety data sheet that comprises of a specified 16-section format mentioning about the safety and health while using risky substances.