To take a curve safely, it is important to follow an appropriate technique that minimizes the risk of losing control of the vehicle. Here we explain why the correct option is to brake before entering the curve and accelerate smoothly when exiting it:

- **Before entering the curve**, it is crucial to **reduce speed** or brake if necessary. This is because entering a curve at high speed generates a force that can push the vehicle out of the desired path, increasing the risk of going off the road or invading the opposite lane.

- **Within the curve**, it is important to **turn the steering wheel smoothly** and avoid braking or accelerating abruptly. This helps maintain control of the vehicle and prevent skidding, especially in tight curves or when the vehicle is heavily loaded.

- **When exiting the curve**, you should **accelerate gradually**. This allows you to regain speed in a controlled and safe manner, ensuring that the vehicle returns to a straight path without losing stability.

By following these steps, the risk of accidents is reduced and safety is improved when driving on curved sections of the road.