If, as a result of doubling all its inputs, a firm can more than double its output, the firm's production function exhibits Select one: a. constant returns to scale. b. increasing returns to scale. c. decreasing returns to scale. d. increasing marginal productivity to at least one input.

Arguments made against free trade include all of the following exceptdumping is an unfair trade practice that puts domestic producers of substitute goods at a disadvantage that they should be protected against.national defense considerations justify producing certain goods domestically whether the country has a comparative advantage in their production or not.free trade is inflationary and should be restricted in the domestic interest. if foreign governments subsidize their exports, foreign firms that export are given an unfair advantage that domestic producers should be protected against.infant industries should be protected from free trade so that they may have time to develop and compete on an even basis with older, more established foreign industries.