The answer to this question is B. A physical hazard may occur when a foreign object is found in food. In this case, the foreign object found is the plaster because it obviously does not belong with the rest of the food. Plaster can cause harm when ingested. Other examples of a physical hazard are glass and metal.
Biological hazard may refer to the yeast, bacteria, parasites, and so much more that may be present in food that will definitely cause harm to those who would eat it. Those who suffer from E.Coli after eating something will be suffering from this type of hazard. Chemical hazard may occur when the food is mixed with pesticides and other chemicals that may cause harm to the body.