"which of the following statements is (are) true? i. free entry to a perfectly competitive industry results in the industry's firms earning zero economic profit in the long run, except for the most efficient producers, who may earn economic rent. ii. in a perfectly competitive market, long-run equilibrium is characterized by lmc < p < latc. iii. if a competitive industry is in long-run equilibrium, a decrease in demand causes firms to earn negative profit because the market price will fall below average total cost."a) i. ii. and iii b) ii, iii. and iv c) i and iii d) i only

C) I and III

Explanation:

A competitive market is characterized by having many and diverse suppliers, and many and diverse consumers. So no supplier or no consumer is able to dictate market conditions. That means that all suppliers and consumers are price takers (the price is set by the market).

1) the stages a new product goes through from beginning to end, i.e., the stages that a product passes through from introduction through growth, maturity, and decline. 2) the time from initial research and development to the time at which sales and support of the product to customers are withdrawn. 3) the period of time during which a product can be produced and marketed profitably.

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answer; private store;