Explain in brief the three methods food preservation

Any three methods of food preservation used at home are :-

1). We use oil as preservative in pickles.

2). We preserve milk by boiling method.

3). We use sugar and salt as preservatives in different food items

Hope this works!!!

Explanation:

Food preservation includes food processing practices which prevent the growth of microorganisms, or other microorganisms, and slow the oxidation of fats that cause rancidity.

the answer for this question would be d. glaciers