Business law regulates the sale of goods,  implied terms and conditions, the effects of performance, and breach of such contracts and remedies available to the parties, the carriage of goods, including both national and international rules governing insurance, bills of lading, charter parties, and arbitrations, consumer credit agreements and labor relations determining contractual rights and obligations between employers and employees and the regulation of trade unions. Answer C is not related to the question, therefore C is the correct answer.