Assumption I: People generally decide to purchase any product after seeing the name in the advertisement.
This is implicit because the statement suggests that seeing the product in advertisements influences consumer decisions.
Assumption II: Uncommon appeal may attract the customers.
This can be considered implicit as well; by not wanting the product to be seen in a typical advertising format (like newspapers), the company might be implying that a unique or uncommon approach will attract customers.
Assumption III: People may come to see the product.
This is also implicit because the advertisement encourages customers to visit the shop, indicating an expectation that people will come to see the product in person.
So, the correct option is (D): All are implicit.