Constant cost industries:

a. use large portions of the total supply of specialized resources.

b. significantly increase the demand for inputs when expanding output, and as a result, input prices rise

c. do not use inputs in sufficient quantities that a change in industry output would affect the prices of the inputs.

d. are those in which the cost curves of individual firms shift upwards as industry output expands.

The correct answer to the following question will be Option C.

Explanation:

Constant cost industries seem to be a sector wherein the proportion of units produced as well as manufacturing costs every unit maintains the very same irrespective including its amount of manufacturing or rise in population. Which doesn't use input data in the appropriate amount to influence the rates of that same components by a shift in industry revenue. This doesn't even use inputs in such amounts that perhaps the costs of that same inputs will be influenced by a change in business production.

The other choices are not linked to an industry of this kind. Therefore the clarification above is correct.