Which of these methods would a person use as preservatives while making pickles?
I. Adding salt
II. Adding sugar
III. Adding oil
IV. Canning
V. Pasteurization

Options

A. II and IV
B. I only
C. II and III
D. IV and V

Answer

To determine which methods can be used as preservatives while making pickles, let's analyze each option provided:

1. **Adding Salt**: Salt is commonly used in pickle making. It acts as a preservative by creating a high osmotic pressure that inhibits the growth of many microorganisms, thus preventing spoilage. Therefore, this method is effective for preservation.

2. **Adding Sugar**: While sugar can act as a preservative in some contexts (like jams and jellies), it is not typically used in the traditional pickle-making process. Pickles are usually more associated with salt rather than sugar for preservation.

3. **Adding Oil**: Oil is not a traditional preservative for pickles. While it can help in some types of food preservation (like oil-based dressings), it does not effectively prevent microbial growth in pickles.

4. **Canning**: Canning is a method of preserving food by sealing it in airtight containers and heating it to destroy microorganisms. While this method is effective for many foods, it is not specifically used in the traditional process of making pickles.

5. **Pasteurization**: Pasteurization involves heating food to kill harmful bacteria. This method is not typically used in the making of pickles, which are usually fermented or brined rather than heated.

Based on this analysis, the method that is primarily used as a preservative while making pickles is:

**Answer**: I. Adding Salt