The correct answer is B. Dehydration.
Dehydration is the process of removing water from a substance. This can be done by heating, freezing, or using a desiccant. Dehydration is a common method of food preservation because it prevents the growth of bacteria and other microorganisms.
Pasteurization is a process of heating a food to a specific temperature for a specific amount of time to kill harmful bacteria. This process does not kill all bacteria, but it does reduce the number of harmful bacteria to a safe level. Pasteurization is often used to preserve milk, cheese, and other dairy products.
Sterilization is a process of killing all living organisms, including bacteria, viruses, and fungi. This process is often used to preserve medical equipment and food products. Sterilization can be done by heat, radiation, or chemicals.
None of the above is not the correct answer because dried milk and dried meat are examples of dehydration.