What are the most on-duty hours a bus driver can undertake in a seven consecutive day cycle?
Answer: B — 70 hours
The correct answer is B 70 hours. According to federal regulations, the maximum number of on-duty hours a bus driver can work in a seven consecutive day cycle is 70 hours. This is to ensure that drivers get enough rest and do not become fatigued while operating a vehicle. Option A and D are incorrect because they exceed the maximum limit of 70 hours. Option C is also incorrect because it is below the maximum limit.