When merging onto a highway you should:

When merging onto a highway, it is important to enter at the same speed as other traffic to maintain a smooth flow. Option B, accelerating quickly, can be dangerous as it may cause you to lose control of your vehicle. Option C, slowing down before merging, can also be dangerous as it may cause other drivers to have to suddenly brake. Option D, coming to a complete stop before entering, is not only incorrect but it is also illegal as it disrupts the flow of traffic on the highway.