As you enter a highway, what is the speed you should aim to maintain with the flow of traffic?

Answer: A — Same as the cars on the highway

It is important to maintain a safe speed while entering a highway, as merging with other cars can be dangerous if done at a significantly different speed. Option B suggests going below the speed limit, which can pose a hazard and disrupt the flow of traffic. Option C mentions going above the speed limit, which is not safe or legal. Option D also suggests going slower than the speed limit, which may cause frustration or confusion for other drivers. Therefore, the best option is to aim for the same speed as the cars on the highway to ensure a smooth and safe merge.