What is the ethical service requirement when a taxi driver notices a passenger experiencing motion sickness or nausea during transit?

1. Accelerate quickly to end the trip faster before the passenger gets sick
2. Drive smoothly, avoid abrupt acceleration and sharp cornering, open windows or adjust ventilation, provide a sick bag if available, and pull over safely if the passenger needs relief
3. Order the passenger to get out immediately on the expressway
4. Demand an upfront RMB 200 cleaning deposit before continuing to drive