1. The problem asks us to identify the mistakes in Albert's distance-time graph based on his cycling journey details. 2. Albert cycled 3 km in 8 minutes starting at 11:00. This means the first segment should end at 11:08. 3. He stopped for 10 minutes, so the horizontal (flat) section representing no distance change should last 10 minutes, from 11:08 to 11:18. 4. He then cycled 2 km in 12 minutes, which should take the time from 11:18 to 11:30. 5. Now, check the provided graph clues: - The horizontal axis correctly starts at 11:00 and ends at 11:30. - The first rise is from 0 to 3 km in 8 minutes, which is correct. - The horizontal section lasts 10 minutes between 11:08 and approximately 11:18, which matches the stop duration. - The second rise is from 3 km to 5 km (3 + 2 km) over the next 12 minutes, matching the problem. 6. The possible mistakes from the list are: - Missing units from the distance axis: The vertical axis shows distance but no units like km are shown, which is a valid mistake. - The horizontal section should be shorter: No, it correctly lasts 10 minutes. - The horizontal section should be longer: No, duration is accurate. - The line should not start at 11:00: The line correctly starts at 11:00. - The line should end at 4 km: The final distance should be 5 km, not 4 km, so ending line at 4 km is a mistake if that happened. 7. According to the description, the line ends at 5 km, so no mistake there. 8. Therefore, the only mistakes Albert made are: - Missing units from the distance axis Final answer: \textbf{Albert's mistake is missing units from the distance axis.}