At zero economic profits, a competitive firm:
a) has an incentive to leave the industry to make higher profit elsewhere. is making a normal profit;
b) its revenues are just sufficient to cover all costs of production, including opportunity costs.
c) is unable to pay its opportunity costs of production but will remain in business to minimize losses.
d) will benefit, in the form of higher profits, by raising its prices above average cost.

The interaction of individual choices because a type of fish is on the verge of extinction, the government imposes rules that prohibit fishing in the publicly owned spawning grounds. at first owners of fshing bouts complain about this restriction on where they can fish, but soon they notice that the number of adult fish swimming outside the protected area is much higher than it was before. with the restriction, each fishing boat ends up catching more fish than it did before the r which of the following principles of economic interaction best describes this scenario? o there is a tradeoff between equality and efficiency o markets usually lead to efficiency. o when markets do not achieve efficiency, government intervention can improve overall welfare o markets allocate goodseffectively