The purpose of this article is to establish fair and reasonable procedures for the adoption of children and to provide for the well-being of the child, with full recognition of the interdependent needs and interests of the biological parents and the adoptive parents. However, when the interests of a child and an adult are in conflict, the conflict must be resolved in favor of the child. Children may be adopted by or placed for adoption with residents of South Carolina only, except in unusual or exceptional circumstances.