Question

not a characteristic of oligopoly *
controlled by a few corporations
non price competition
can be differentiated or identical products/services
little control over market price

unlimited liability *
corporation
monopoly
sole proprietorship
pure competition

Explanation:

1. In an oligopoly, a few large corporations dominate the market, engage in non - price competition, and can offer differentiated or identical products. Firms in an oligopoly have significant control over market price due to their market power. So, "little control over market price" is not a characteristic of oligopoly.
2. For unlimited liability, in a sole proprietorship, the owner has unlimited liability as they are personally responsible for all business debts and obligations. Corporations have limited liability, monopoly is about a single firm controlling a market, and pure competition has many small firms with no market power and no unlimited - liability concept in the context of this question.

Answer:

1. D. little control over market price
2. C. sole proprietorship