You pass by a number of boxes in the hazardous materials storage area; they are labeled as biohazard boxes and stickered with the biohazard symbol. Which statement BEST describes why they display the symbol and the biohazard marking? Hazardous materials should never be stored even if they are double marked.
Employers have a responsibility to clearly communicate hazards and mark all hazards with the appropriate warning symbols.
The only hazardous material that must be marked is biohazard material; however, OSHA says that it must be marked with the symbol and the words.
The manufacturer of the boxes issued an MSDS sheet that required this specific type of labeling.

Employers have a responsibility to clearly communicate hazards and mark all hazards with the appropriate warning symbols

Explanation:

The statement that best describes why they display the symbol and the biohazard marking is because employers have a responsibility to clearly communicate hazards and mark all hazards with the appropriate warning symbols.

Since the boxes are labelled as hazardous, accidents can be prevented as one will clearly be aware not to go close to the hazard. Also, in some cases if an accident occur without people knowing that a hazard is there, the employer may end up paying a hefty fine for this and this has been prevented with the prior warnings.