If a passenger displays symptoms of sudden acute medical emergency (such as severe chest pain, loss of consciousness, or violent seizures) during a trip, what is the driver's FIRST priority action?

1. Continue driving slowly toward the original commercial destination while ignoring the passenger
2. Immediately pull over safely, call 120 emergency medical services (or divert swiftly to the nearest hospital emergency room if closer), and alert platform emergency dispatch
3. Eject the passenger onto the sidewalk and cancel the order on the app
4. Stop and search the passenger's pockets for personal cash