The following terms as used in this article shall have the following meanings:
(1) GSA CONTRACT. A contract for goods or services established by the General Services Administration of the United States Government or its successor agency.
(2) PROFESSIONAL SERVICES. The services of physicians, architects, engineers, attorneys, and other individuals, or business entities offering the services of such individuals, who possess a high degree of scientific or specialized skill and knowledge where the experience and professional qualifications of the service provider are particularly relevant to the provision of the required service. Questions of whether a required service is a professional service under this article or a service subject to the requirements of Section 41-16-20 shall be determined by the Director of Finance with the advice of the Attorney General.
(3) SOLE SOURCE. The provision of goods or a service where only one person or business entity can provide the required goods or service.