Final answer:
In Scripture, natural law supplements the ethics provided by special revelation. Classical natural law theory, informed by thinkers like Aquinas, argues that natural laws provide a basis for moral guidance alongside divine commandments.
Step-by-step explanation:
In Scripture, what supplements the ethics provided by special revelation is C) Natural Law. According to Thomas Aquinas, besides eternal, human, and divine laws, natural laws are those that can be discovered through human reason. These laws are believed to be established by God and are understood to govern the natural world and, by extension, human behavior. While divine commandments are directly revealed by God, natural laws can be reasoned to by humans and are considered objective, fitting within the framework of the universe and human nature as created by God.
This view forms the basis for classical natural law theory, which affirms that ethical premises can be derived from the natural world. Thus, natural law acts as an augment to the ethical instructions provided in divine revelations, offering moral guidance based on the inherent order of nature. It is through natural law that humans are expected to discern right from wrong in the absence of or in supplement to special revelation.