Answer:
The chef was not satisfied because some foods (such as meat, fish and dairy) must be kept refrigerated to prevent the spread of bacteria.
Step-by-step explanation:
Foods such as meat, fish, and dairy products (cheese, yogurt, butters, etc.) need to be kept refrigerated. This is because the permanence of these products at room temperature causes the proliferation of bacteria, which can spoil the products, or cause infections to those who ingest them. For this reason, the chef, shown in the question, was upset when a new member of his team left fish and yogurt at room temperature all afternoon.