The correct answer is A. Cocaine could be bought legally in most stores.
Step-by-step explanation:
A pure capitalist economy relies on laissez-faire; this means every business or corporation is free to choose the product they want to produce and sell it at the price they want with no intervention from the government. This implies, in pure capitalism the government does not restrict the production of certain goods such as drugs or weapons and therefore these can be sold freely.
According to this, if pure capitalism existed in the United States, "cocaine could be bought legally in most stores" because in pure capitalism the government does not intervene in the market and therefore could not forbid business from producing and selling drugs.