Any minor child may be adopted by any adult person. However, the person adopting the child shall be at least ten years older than the child adopted unless the court finds the adoption of the child by the adult person in the best interest of the child.
In an adoption proceeding or in any proceeding that challenges an order of adoption or order terminating parental rights, the court shall give due consideration to the interests of the parties to the proceedings, but shall give paramount consideration to the best interests of the child.