0 Antitrust policy. O a. is any firm facing an upward sloping demand curve. O b. is government regulation aimed at preventing monopoly and fostering competition in markets where competition is desirable. Oc. is government regulation of natural monopoly, where, because of economies of scale average production cost is lowest when a single firm supplies the market. O d. tries to improve health and safety, such as by control of unsafe working conditions and dangerous products. e. is the ability of a firm to raise the price without losing all its sales to rivals.