Final answer:
A broker's activities usually include buying, selling, and negotiating real estate transactions, but holding a non-public open house is not typically part of a broker's role. That activity is more aligned with real estate agents showing properties.
Step-by-step explanation:
Among the activities included in the definition of a Broker, the option that is NOT typically included is "holds a non-public open house." A broker is generally involved in activities such as selling, exchanging, purchasing, renting, or leasing real estate. They also negotiate these transactions and engage in the business of real estate. However, holding a non-public open house is more of an activity for agents who are showing properties to potential buyers and does not directly involve the brokerage activities of buying, selling, exchanging, renting, or leasing real estate.