Answer: D. keeping some foods for a considerable amount of time
Explanation:
To slow the microorganisms growth, we need to put our food in lower-temperature environment, that's why we storage food in a refrigerator.
Additionally, food has an experiation date, which is an estimation to when the food won't be able to be ingested.
So, if we properly store the food, if we keep it in the refrigerator, if we respect the expiration date, we are avoiding spoiling.
But, if we keep the food a longer time that its expiration dat, or outside the refrigerator, it will lead to spoiling.
Therefore, the right answer is D
