What temperature must the wash cycle of a high-temperature dishwasher reach?

The correct temperature that the wash cycle of a high-temperature dishwasher must reach is 82 degrees Celsius. This high temperature is essential for effectively sanitizing dishes and utensils by killing harmful bacteria that can cause foodborne illnesses. The heat not only helps in the cleaning process by breaking down food particles and grease but also ensures that any remaining pathogens are destroyed.

By achieving a temperature of 82 degrees Celsius, the dishwasher process meets the necessary health and safety standards required for food service operations. It's crucial because microbial contamination can occur easily in kitchens, and ensuring that equipment is sanitized effectively helps to maintain food safety.

The other temperature choices, while they may seem feasible, do not meet the required standard for high-temperature dishwashing sanitation. For instance, temperatures lower than 82 degrees Celsius may not effectively eliminate bacteria, which is a primary goal in ensuring the safety of food contact surfaces.