Answer:
C) Is the ability to alter the market price of a good or service.
Explanation:
Market power can be held by both consumers and suppliers, it just depends on the size of each of them. For example, a monopoly has a very large market power because it is the only supplier of a certain product or service. On the other hand, a large manufacturer or retailer has a large market power over its vendors. E.g. Walmart is known for demanding the lowest possible prices form its vendors.
