Producing a differentiated product occurs in which of the following industries?

Government provide public goods such as national defence because:

a) governments are more efficient than private firms at producing public goods b) people do not value national defence very highly c) of the potential that private firms will make excess profit d) of the free-rider problem which results in underproduction by private firms

The figure below illustrates the impact of an export subsidy as imposed by a large country. No imports are permitted.The consumption effect of the export subsidy is shown by area(s)

A. (d + i + j). B. b. C. (b + f + g). D. d.