Which of the following is an example of primary packaging?

Primary packaging refers to the packaging that directly contains and protects the product itself. It is the first layer of packaging that comes into direct contact with the product, serving essential functions such as safeguarding the product from damage, contamination, and providing necessary information to consumers.

The option involving a plastic bag surrounding a single item is a clear example of primary packaging because it directly encloses and protects the product, making it ready for sale and use. This kind of packaging often includes labels that provide important information about the product, such as instructions, nutritional information, or ingredients.

In contrast, other options like a cardboard box and a shipping container are examples of secondary or tertiary packaging, respectively. These types of packaging serve the purpose of grouping several primary packages for handling, distribution, or protection during transportation but do not directly contain the product itself. The shrink wrap is also considered secondary packaging as it typically wraps multiple items together for additional protection and stability but does not serve as the primary barrier between the product and the external environment.