Final answer:
The correct answer is none of the above. Potentially hazardous foods are those that require strict temperature control to prevent the growth of harmful bacteria.
Step-by-step explanation:
The correct answer is option d) - none of the above. None of the options mentioned in the question (garlic in oil, custard, cut melon) are considered potentially hazardous foods.
Potentially hazardous foods are those that require strict temperature control to prevent the growth of harmful bacteria. Examples of potentially hazardous foods include raw or undercooked meat, poultry, seafood, eggs, and dairy products.