Interstate commerce primarily involves which of the following?

Interstate commerce primarily involves the exchange of goods, services, and transportation between two or more states. The U.S. Constitution's Commerce Clause grants Congress the authority to regulate interstate commerce, highlighting its significance in the national economy. This clause is fundamental in establishing the framework for economic activity that crosses state lines, ensuring a unified market and providing benefits such as increased competition and wider availability of goods and services.

In contrast, activities within one state focus on intrastate commerce, which falls under the jurisdiction of state law rather than federal regulation. International trade pertains to the exchange of goods and services between countries, while local trade is limited to transactions within a specific locality or city. Each of these alternative options represents narrower scopes of trade that do not encompass the broader concept of interstate commerce.