Final answer:
The method that is not typically used by nations to privatize state-owned businesses is 'D. Assigning the business to one owner,' as this is not reflective of the market-oriented goals of privatization.
Step-by-step explanation:
Privatization of state-owned businesses can be accomplished using several methods, however, one of these is not a typical approach used by nations. The methods include A. Selling shares in a business to investors, which allows individuals to own a portion of the company and is a common privatization strategy; B. Issuing certificates to foreign governments enabling them to purchase shares in the business, which could potentially happen but is less common due to national security and economic independence concerns; C. Giving out vouchers that can be used by citizens to purchase shares in a business, a way to distribute ownership among the populace; and the non-typical approach D. Assigning the business to one owner, which resembles nationalization or cronyism more than privatization.