Answer:
The correct answer will be- drying, refrigerating and preserving
Explanation:
Food preservation is the procedure performed to preserve the food material for future use which includes a number of techniques. Some of them include:
1. Drying: dehydration of the food material to preserve in the extreme condition like in winters. This technique dates back to 5000 years.
2. Refrigerating: keeping the food in the frozen conditions below their freezing point help stop the metabolism and do not allow the growth of the pathogens.
3. Preserving: other techniques like smoking, drying-freezing, curing and other techniques.
Thus, drying, refrigerating and preserving is the correct answer.
