Under road traffic safety guidelines and taxi operational standards, what is the driver's duty when a passenger travels with an infant or young child?

1. Advise the accompanying adult to seat the child in the rear passenger seat, assist with seatbelts or child safety restraints, and engage child safety door locks if appropriate
2. Insist that the young child sit in the front passenger seat to view traffic
3. Refuse the ride because children make noise
4. Charge an extra adult fare for children regardless of height