You would like to turn right. What is the right course of action now?

Your answer is correct because when you want to turn right at an intersection, you must stay behind the vehicle in front (in this case, the blue car) instead of moving up to the stop line or the line of sight. According to German traffic rules, you should not move forward beyond the vehicle ahead when stopped at a red light or before turning, as this helps maintain safe distances and avoid blocking other road users or creating confusion. This also ensures that you wait your turn properly and only turn when it is safe and allowed. So, remaining behind the blue car is the correct and safe action when preparing to turn right.