Why must a driver disengage the differential lock immediately after returning to a dry, paved asphalt road?

1. A locked differential on high-traction pavement prevents wheels from turning at different speeds in corners, causing severe driveline binding, tyre scrub, and loss of steering control
2. To prevent the cabin heater from overheating
3. To enable the headlights to work
4. To prevent the fuel tank from leaking