Answer:
a perfectly competitive firm
a monopolistically competitive firm
a perfectly competitive firm
Both the perfectly competitive firm and monopolistically competitive firm
a monopolistically competitive firm
Neither firms
Explanation:
A perfect competition is characterized by many buyers and sellers of homogenous goods and services. Market prices are set by the forces of demand and supply. There are no barriers to entry or exit of firms into the industry.
In the long run, firms earn zero economic profit. If in the short run firms are earning economic profit, in the long run firms would enter into the industry. This would drive economic profit to zero.
Also, if in the short run, firms are earning economic loss, in the long run, firms would exit the industry until economic profit falls to zero.
Firms are productive and allocative efficient and do not operate with excess capacity
A monopolistic competition is when there are many firms selling differentiated products in an industry. A monopoly has characteristics of both a monopoly and a perfect competition. the demand curve is downward sloping. it sets the price for its goods and services. As a result, price is always higher than marginal cost
Profit is maximised when marginal revenue equal marginal cost
An example of monopolistic competition are restaurants
