Which of the following is a primary role of the Canadian Transport Emergency Centre?

The primary role of the Canadian Transport Emergency Centre is to provide emergency response information. This organization assists in ensuring that responders have access to critical information regarding hazardous materials, including the appropriate measures to manage incidents effectively. By delivering accurate and timely information, the Centre supports responders in making informed decisions during emergencies involving hazardous substances, thus enhancing public safety and minimizing environmental impacts.

The other roles mentioned, such as providing medical assistance, assessing environmental impacts, and training personnel, are important aspects of emergency response but are not the focal responsibilities of the Canadian Transport Emergency Centre. These functions may be managed by different agencies or sectors specialized in those respective areas, thereby allowing the Centre to concentrate on providing vital emergency response information.