You want to turn left. Which line should you follow?

Answer 1 (the middle driving line) is correct because when turning left you should position your vehicle as far to the left as necessary within your lane, but without crossing into oncoming traffic or cutting the corner. In many left-turn situations—especially where there is no marked left-turn lane—the safest and most correct path is a “middle” curve that keeps you clearly in your own side of the road before the junction and then guides you into the correct lane of the road you’re turning into.

A good rule of thumb for similar questions is: prepare early for the left turn by keeping left within your lane, then turn in a smooth arc so you don’t swing wide and don’t take the bend too tightly. The left line would typically mean cutting too close toward the center/oncoming side, and the right line would start the turn from too far right, causing you to swing across the road and potentially end up in the wrong position.