Which of the following is the best synonym for "marginal" in economics?

Consider four possible benefits of a water resources project: I. Provides employment to construction workers currently building houses. II. Provides electric power to the market. III. Provides reduced flood risk to individuals living along the river. IV. Raises the profits of MacDonald's stands in the area which serves construction workers. Which of these are true social benefits of the project?

a. All of them b. I, II, and III, but not IV c. I and III, but not II and IV d. II and III, but not I and IV

The maximum possible profit that could be earned by a cartel is: a. greater than the monopoly profit

b. equal to the monopoly profit. c. less than the monopoly profit. d. unrelated to the level of monopoly profit.