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------------------------------------------------ Food handlers can contaminate food when they:

a) Show symptoms such as vomiting or nausea
b) Wash hands before and after they change gloves
c) Cook raw meats to their proper temperatures
d) Keep cold food refrigerated until ready for use

Food handlers can contaminate food when they fail to follow proper food safety practices, including not washing hands before and after changing gloves, not cooking raw meats to proper temperatures, and not refrigerating cold food. Symptoms of illness can indicate potential contamination, but it is not the only factor.

Explanation:

Food handlers can contaminate food when they fail to follow proper food safety practices. This includes not washing their hands before and after changing gloves, not cooking raw meats to their proper temperatures, and not keeping cold food refrigerated until ready for use. Symptoms such as vomiting or nausea can indicate that a food handler may be ill and could potentially contaminate food, but it is not the only way food can be contaminated.

Learn more about Food contamination here:

https://brainly.com/question/28272665