Which norms of conduct are required from bus drivers and conductors?

1. Correct answer: They must behave politely and courteously.
2. They should assist babies and old people and ensure they have a place to sit.
3. They should speak quietly.
4. They should behave according to the accepted social rules of courtesy in their place of residence.

WhyThe driver and conductor must behave politely and courteously to all passengers. The other options are either narrower or swap the general rule for local customs.