Final answer:
A company that matches individuals to exchange properties and assists them would require a real estate license, as it entails facilitating property transactions.
Step-by-step explanation:
The subject who requires a real estate license in the given options is: B. A company that, for a fee (Not commission), matches individuals from different parts of the country who want to exchange properties and then assists them in doing so.
Occupational licenses are used to guarantee quality within the labor market, indicating that a worker has completed certain education or test requirements. While professions like doctors, teachers, or engineers might be more commonly associated with licensing, most states also mandate licenses for real estate brokers, among others.
Therefore, a company that provides services like matching individuals to exchange properties would need to operate under a real estate license, as their actions involve facilitating property transactions, which come under the purview of real estate.