When changing from one lane to another, how should it be done?

Answer: C — Gradually and carefully

When changing lanes, it is important to do so gradually and carefully. This allows you to assess the traffic around you and make sure it is safe to make the lane change. Abrupt lane changes can startle other drivers and increase the risk of causing an accident. Signal your intentions, check your blind spots, and make the lane change smoothly to ensure the safety of yourself and other road users.