Final answer:
Melissa is best described as an independent contractor, as she has autonomy in setting her own hours, is paid based on results, and pays her own expenses, indicative of such a professional arrangement. Therefore, the correct option is B.
Step-by-step explanation:
Based on the information provided, Melissa best fits the description of an independent contractor. In her role as a real estate professional, she sets her own hours and is paid based on results rather than time worked. This level of autonomy and result-based pay is typical of independent contractors.
Furthermore, while she holds an occupational license as a real estate broker, her supervision by the broker is related to licensing law rather than employment oversight. Independent contractors usually pay their own expenses, which aligns with Melissa being 'cool with that' and further supports her classification as an independent contractor rather than an employee, licensee, or non-employee.