Answer:
Packaging
Step-by-step explanation:
Since in the question, it is mentioned that for differentiating the product from its competitors John decided to sell its beverages in containers i.e. specially designed also you keep the juice fresh till 7 days even without refrigeration
So here the John is focused on Packaging component as he wants to make that product i.e differentiate from its competitors also he packaged the product in that way that it looks attractive by adding some special kind designs add on it
Therefore the packaging is the most appropriate option