Which of the following is considered a channel of interstate commerce?

Highways serve as significant channels of interstate commerce due to their role in facilitating the movement of goods, services, and people across state lines. The importance of highways in interstate commerce is grounded in the Constitution, specifically the Commerce Clause, which empowers Congress to regulate commerce among the states.

Highways enable the transportation of commercial vehicles, cargo, and travelers, making them crucial for businesses that operate in multiple states. Their function directly supports the economy by allowing products to be delivered and exchanged across state borders. This unrestricted flow of commerce is a fundamental aspect of maintaining a robust and interconnected national economy.

While airports are also vital for interstate travel and commerce, they are typically considered federal establishments and regulated differently. City streets, while facilitating local commerce, do not serve as primary conduits for interstate trade. Private property does not generally constitute a channel of interstate commerce unless it is specifically used for commercial activities that impact interstate markets. Thus, highways are the most representative option for channels of interstate commerce.