Final answer:
A personal assistant to a broker can host an open house but cannot negotiate on the principal's behalf or sign a listing agreement without a real estate license.
Step-by-step explanation:
A personal assistant to a broker may perform all of the above acts. They can negotiate on the principal's behalf, sign a listing agreement on the broker's behalf, and host an open house. These tasks are part of the assistant's responsibilities to support the broker in their daily operations.
A personal assistant to a broker may perform various tasks that do not require a real estate license. Among the activities a personal assistant might engage in, they can typically host an open house to showcase a property.
However, when it comes to activities such as negotiating on the principal's behalf or signing a listing agreement on the broker's behalf, requires the expertise and authority that come with a licensed real estate professional. Therefore, a personal assistant may not be authorized to perform such actions without appropriate licensure.