Which function of money allows for specialization to take place?

Which of the following is not an example of an economic trade-off that a firm has to face?

A) whether it is cheaper to produce with more machines or with more workers B) whether it should produce more of its product C) whether or not consumers will buy its products D) whether it is to outsource the production of a good or service

When a developing country relies on import substitution,

a. it sacrifices the gains from specialization and comparative advantage b. replaces low-cost foreign goods with high-cost domestic goods c. domestic producers, shielded from foreign competition, usually fail to become efficient d. other countries often retaliate with their own trade restrictions e. All of the answers are correct