Concept:The journey crosses midnight, so the total time must be calculated in two parts.Explanation:The bus left at 9:15 pm and arrived at 2:45 am the next day.From 9:15 pm to 12:00 midnight is 2 hours 45 minutes.From 12:00 midnight to 2:45 am is 2 hours 45 minutes.Add both intervals: 2 hours 45 minutes+2 hours 45 minutes=5 hours 30 minutes.Answer:Option C. 5 hours 30 minutes.