Which type of law is primarily developed from court decisions?

The correct answer is common law. Common law is a body of law that is developed through judicial decisions rather than through legislative statutes or executive branch action. This type of law evolves from the precedents set in previous court cases, allowing judges to interpret laws and make decisions that can influence future cases. It is rooted in the principle of stare decisis, which means that courts should follow established precedents when making their rulings.

Legislative law, on the other hand, refers to laws enacted by legislative bodies such as parliaments or congresses. Statutory law is specifically written laws passed by these legislative bodies, which can be distinctly contrasted with common law that is created by court rulings. International law governs the relationships between nations and is established through treaties and conventions rather than through court decisions. Therefore, the nature of common law as arising from judicial rulings is the key reason it is the correct choice in this context.