Which government bodies are responsible for transportation policies and regulations?

The choice indicating that Transport Canada (TC) and/or the Department of Transportation (DOT) is responsible for transportation policies and regulations is correct because both organizations are specifically tasked with overseeing and implementing regulations related to various modes of transportation within their respective jurisdictions.

Transport Canada is the national authority that creates policies, regulations, and standards for Canadian transportation to ensure safety, efficiency, and environmental sustainability on land, in the air, and in waterways. Similarly, in the United States, the Department of Transportation oversees the nation’s transportation systems, including highways, rail, and aviation, by developing and enforcing regulations that govern these areas.

By contrast, the other options focus on specific aspects of environmental protection, aviation safety, or workplace conditions rather than on comprehensive transportation policies. The Environmental Protection Agency deals primarily with environmental issues, the Federal Aviation Administration specializes in civil aviation regulations, and the Occupational Safety and Health Administration focuses on workplace safety. Hence, these agencies do not encompass the broader transportation regulatory framework that TC and DOT provide.