Final answer:
An out-of-state broker must obtain a certificate of registration from the Mississippi Real Estate Commission (MREC) before advertising property in Mississippi.
Step-by-step explanation:
An out-of-state broker who wishes to advertise out-of-state property in Mississippi (MS) must first obtain a certificate of registration from the Mississippi Real Estate Commission (MREC). This involves submitting forms to the commission, including information about the brokerage and the properties to be advertised. By doing so, they adhere to the regulations set forth by the commission to ensure that all real estate advertisements and transactions protect the public's interest and comply with Mississippi state law.