Final answer:
Contracts for the sale of goods fall under Article 2 of the UCC, which is a set of laws focused on commercial transactions. The enforcement of such contracts is crucial for economic growth and security in trading.
Step-by-step explanation:
Among the options provided, contracts for the sale of goods fall under Article 2 of the Uniform Commercial Code (UCC). The UCC is a comprehensive set of laws regulating commercial transactions, particularly the sale of goods. It applies to transactions involving personal property, but not to real estate transactions or services. While contractual rights allow individuals to use their property and enter into agreements with others, including the right to trade or sell that property, it is the enforcement of these contracts by the legal system that facilitates economic growth by securing the rights of parties and reducing the risks associated with noncompliance.