Which of the following is NOT a responsibility of a real estate broker?

A real estate broker has a wide range of responsibilities that include facilitating transactions for clients, managing agents, and ensuring compliance with regulations. However, offering legal opinions on contracts is not within the scope of a broker's responsibilities unless they are also a licensed attorney.

Brokers are expected to guide their clients through transactions, understanding and interpreting contracts, but they cannot provide legal advice unless they hold a legal license. This distinction is crucial because providing legal opinions entails responsibilities and liabilities that fall under the practice of law, which is regulated separately from real estate brokerage. Therefore, the answer highlighting that offering legal opinions on contracts is NOT a responsibility of a broker is accurate, as that role is specifically reserved for licensed attorneys.