Final answer:
A final class segment is the last part of a class or course that summarizes and reviews key concepts. Its duration varies based on the course.
Step-by-step explanation:
A final class segment refers to the last part or section of a class or course. It is typically intended to summarize and review the key points and concepts covered throughout the course. The duration of the final class segment can vary depending on the length and content of the course, but it is usually shorter compared to regular class sessions.