Read the list of sentences from the article. 1. Sales taxes and tariffs on imports and exports all affect systems of exchange by raising prices. 2. Another factor is certain laws that are in place. 3. For example, age restrictions on the purchase of alcohol are intended to block that exchange. 4. Governments may choose to intervene in a market economy through regulations or social welfare programs. What CENTRAL idea do these details support? A Free market economies are usually characterized as having thriving financial markets. B Some people do not like when governments intervene in their market economies. C Nearly all market economies have some form of government involvement. D Countries that have free market economies tend to be the most advanced nations.​