Concept:Packaging is the activity that both protects a product and improves its appearance.
Explanation:Packaging involves designing and producing the container or wrapper for a product.
It serves two main purposes: protection and presentation.
Protection means safeguarding the product from damage, moisture, or contamination.
Presentation means making the product attractive to attract customers.
Advertising promotes the product, grading sorts by quality, and labelling gives information.
Only packaging combines appearance improvement with protection.
Answer:D. packaging