The correct option is 4. The company has a dominant share in the market..

A price setter is a characteristic of firms that are able to establish their own prices of a product or service as a result of the lack of competition in the market. So price setters have a significant market share. That is to say, a price setter must have some monopolistic power to be able to price a product/service independently from the market. Therefore, a price setter's product/service must be differentiated and have a few substitutes.

Note that the opposite of a price setter is a price taker which is a characteristic of a perfectly competitive market. Additionally, if the payer has more bargaining power, a firm cannot be a price setter. Finally, government programs are not directly associated with the establishment of market prices. Thus, options 1., 2., and 3. are incorrect.