Final answer:
The WHMIS pictogram with a black symbol surrounded by a red diamond border stood on end and a black circle border represents the biohazard hazard class.
Step-by-step explanation:
The pictograms you are referring to are part of the Workplace Hazardous Materials Information System (WHMIS) in Canada. They are used to identify hazards associated with different chemicals.
The WHMIS pictograms consist of various symbols to represent different hazard classes.
The pictogram with a black symbol surrounded by a red diamond border stood on end and a black circle border represents the biohazard hazard class.