I believe the answer is:
1) Consumers overwhelmingly prefer one sandwich shop to another.
3) A hair stylist decides to reduce prices on his services.
4) A worker at a factory decides to take another job for higher pay.
6) A business owner decides to offer a new product for sale.
In the concept of free enterprise, the government would have little to no influence over the economy. Which means that things such as price of the product, the type of product that being used, and ownership of assets would belong to the people in the private sectors.