When changing lanes on a highway, you should:

Answer: B — Signal, check your mirrors and perform your move safely

When changing lanes on a highway, it is important to signal, check your mirrors, and perform the move safely. This ensures that other drivers are aware of your intentions and reduces the risk of accidents. Option A is incorrect because increasing your speed can be dangerous and it is important to maintain a safe speed when changing lanes. Option C is incorrect because it is illegal and dangerous to change lanes without signaling. Option D is incorrect because it is only legal to pass vehicles on the left side, not the right side.