which of the 9 pictograms for working with hazardous chemicals represents the hazard of acute toxicity?

The hazard pictogram that represents the hazard of acute toxicity among the 9 pictograms for working with hazardous chemicals is the Skull and Crossbones symbol (GHS06). This pictogram indicates extreme danger from substances that can cause serious damage to health or death, even in very small quantities, through inhalation, ingestion, or contact. It specifically warns of chemicals that are acutely toxic (fatal or toxic).