Which of the following is typically non-perishable?

• A. Oil
• B. Milk
• C. Cheese
• D. Butter

Answer: (A)

In inventory terms, items that are non-perishable can stay safe and usable at room temperature for a long period because they have low moisture and don’t support microbial growth as readily. Oil fits this description well: when kept in a sealed container away from light, it remains usable for a long time since there’s little water activity for microbes and it’s not prone to rapid spoilage.

Milk, cheese, and butter all contain moisture and nutrients that microbes need, so they spoil much more quickly and typically require refrigeration to slow deterioration. Milk ferments and sours, cheese can spoil or mold once opened (especially softer varieties), and butter, though lower in moisture, can become rancid or moldy if not stored properly.

So, oil is the item that is typically non-perishable.