r7. Which of the following is the basis for an argument against free trade? r a. The Principle of Comparative Advantage r b. the change in the total value of goods and services resulting from trade rc the distribution of the benefits from trade r d. The principle of Increasing Opportunity Costs re all of the above7. Which of the following is the basis for an argument against free trade? a. The Principle of Comparative Advantage b. the change in the total value of goods and services resulting from trade c. the distribution of the benefits from trade d. The Principle of Increasing Opportunity Costs e. all of the above