What are you required to do according to the following road sign?

- Slow down, rough road ahead.
- Slow down because of road-works.
- Correct answer: Slow down and cross the speed bumps With caution.
- Slow down and prepare to bypass obstacles on the road.
Why this is the answer
The correct answer in the official bank: Slow down and cross the speed bumps With caution.
The sign warns of a speed bump further along the road. Slow down in good time and cross it with caution, to keep control of the vehicle and to prevent damage to the vehicle and injury to its passengers. The sign does not warn of road-works, a rough road, or an obstacle you must bypass, so those answers do not fit.