Final answer:
Cash flows in various parts of a multinational corporate system are denominated in one currency.
Step-by-step explanation:
Corporations that operate in several different countries, also known as multinational corporations (MNCs), have certain characteristics.
Out of the given options, the most accurate characteristic of MNCs is b. Cash flows in various parts of a multinational corporate system are denominated in one currency.
This means that the financial transactions within the MNC, such as revenues, expenses, and investments, are conducted using a single currency, which helps in simplifying the financial management of the organization.