Which of the following is NOT a method of controlling biological forces on food supply?
(a) Packaging and chemical additives
(b) Reducing free water content
(c) Increasing osmotic pressure
(d) None of the mentioned
I have been asked this question during an online interview.
The query is from Principles of Food Preservation by Drying-1 in section Principles of Food Preservation by Canning and Drying and Principles of Food Concentrates of Food Engineering