The graph depicts a monopolistically competitive firm. 
At the profit-maximizing level of short-run output, this monopolistically competitive firm will be making a profit of
Definitions:
Network Effects
The effect that additional users of a product or service have on the value of that product to others, where the value increases as more people use it.
Substantial Network
A concept in economics and business that typically refers to a network within a market that has a significant user base or utility, making it valuable and influential.
Marginal Revenue
Marginal revenue is the additional income generated from the sale of one more unit of a good or service.
Elastic Demand
A situation where the demand for a product is sensitive to price changes, with a relatively large change in quantity demanded for a small change in price.
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