Based on the information provided: - The clock shows 3:45 but is 15 minutes slow. - The actual time must be a quarter past (15 min) an hour. Since 3:45 is 15 minutes slow, the real time is 15 min later at 4:00. And since the current time is described as a quarter past an hour, and 4:00 is exactly that, the real time is indeed 4:00. Therefore, the correct time is 04:00.