Answer:
promotion
Step-by-step explanation:
Promotion element does not only makes people aware of the product, but it rather involves various steps, in which the marketing is ensured at maximum reach, from display to personal selling, everything is included.
When the company has setup the booths for such promotion and that the company has setup such booths in various locations, to attract more and more customers, and free display, and further offering trials.
This is the element of marketing mix, which is a combination of various other techniques.