Which of the following is the source of salt used for preservation of food items?
(a) Solar salt
(b) Welled salt
(c) Rock salt
(d) All of the mentioned
The question was posed to me during an online exam.
Origin of the question is Principles of Food Pickling and Curing-1 topic in section Principles of Semi-Moist Foods, Principles of Food Preservation by Fermentation, Principles of Food Pickling and Curing and Principles of Food Storage Stability of Food Engineering