Answer:
D. modified air packaging
Explanation:
Modified air packaging or food products that can go bad if they come in contact with other foods. Food is packed with a gas atmosphere, typically containing an inert gas, such as nitrogen combined with an anti-microbially active gas, such as carbon dioxide.
When dried milk is left open, it goes soggy and then loses its flavor. Therefore it comes in the category of food that need modified air packaging.
