Which of the following describes statutory law?

Statutory law refers specifically to laws that are written and enacted by legislative bodies, such as Congress or state legislatures, and formally signed into law by an executive authority, like a governor or the president. This form of law is distinct from other types of law like case law, which is based on judicial precedents set by courts, or constitutional law, which derives from the Constitution itself.

When examining the other options, case law refers to the legal principles established in previous court decisions and is not a product of legislative action. Constitutional law pertains to principles outlined in a nation's or state’s constitution and does not originate from enacted statutes. Common practices refer to customs or unwritten laws that arise from societal norms rather than formal legislative processes.

Thus, the definition encapsulated in the response identifies statutory law accurately, emphasizing the legislative creation and formal approval process that characterizes this type of law. This helps clarify the nature and origin of statutory laws, distinguishing them from other legal categories.