Final answer:
The first person to contact regarding concerns about the course is your teacher.
Step-by-step explanation:
If you have a concern about something in the course, such as a grade, assignment, or due dates, the first person you should contact is your teacher. They are the best person to address any issues or questions you may have. They can provide clarification, guidance, and support to help you navigate through the course successfully.
Teachers are typically the most direct and relevant point of contact for addressing issues related to the course content and your academic performance.