Concept:
Food preservation methods often involve creating an environment that is hostile to spoilage microorganisms.
• Salting/Brining: Uses high osmotic pressure to dehydrate microbes.
• Vinegar: Lowers the pH to inhibit bacterial growth.
• Edible Oil: Creates an anaerobic (oxygen-free) seal to prevent mold growth.
Step 1: Analyzing the combination of ingredients.
The question specifies a combination of salt, oil, and vinegar.
This multi-barrier approach is characteristic of traditional pickling.
Step 2: Defining Pickling.
Pickling is the process of preserving food by either anaerobic fermentation in brine or immersion in vinegar.
In Asian and Indian styles, oil is often added as a top layer to prevent surface spoilage.
Step 3: Distinguishing other terms.
Curing is generally restricted to the preservation of meat and fish using salt and nitrates.
Since the description covers a broad use of salt, oil, and acid, the term is Pickling.
Final Answer: (B)