Final answer:
The three R's of global business, rules, rate schedules, and regulations, are associated with nontariff barriers C) (NTBs), which include regulatory and procedural measures that restrict imports.
Step-by-step explanation:
The three R's of global business that are described as rules, rate schedules, and regulations refer to the concept of nontariff barriers (NTBs). NTBs include a variety of regulatory and procedural barriers that make it more difficult or costly to import products. These barriers can involve safety standards, inspections, paperwork, and 'rules-of-origin' regulations, among others. They serve to protect domestic industries without using tariffs or quotas but achieve a similar protective effect by raising the cost or difficulty of importing goods into a country.