Answer: A - Constitutions, legislation, regulations and rules, case law, common law, and contract law are all sources of United States law. Constitution Law refers to rights as outlined in federal and state constitutions. Legislation refers to laws prepared and enacted by a legislative body, like Congress. Regulations and rules can be set in place by executive departments and agencies, such as the Federal Trade Commission. Case law is defined as law based on decisions by judges rather than on constitutions, statutes, or regulations. A body of unwritten laws based on legal precedents is known as common law. Agreements between people, businesses, and groups are referred to as contract law.
