1. Correct Answer: Option A: *5 km*
 2. Explanation:
     To determine how far the person is from the starting point, we need to calculate the net displacement after all the movements.
     Step-by-step Calculation:
     ● Initial Position: Let's assume the starting point is at the origin of a coordinate system, (0, 0).  
     ● First Movement: The person walks 12 km due north.  
           ○ New position: (0, 12)
     ● Second Movement: The person walks 15 km due east.  
           ○ New position: (15, 12)
     ● Third Movement: The person walks 19 km due west.  
           ○ New position: (15 - 19, 12) = (-4, 12)
     ● Fourth Movement: The person walks 15 km due south.  
           ○ New position: (-4, 12 - 15) = (-4, -3)
     Net Displacement:
         ○ The net displacement is the straight-line distance from the starting point (0, 0) to the final position (-4, -3).
         ○ Using the distance formula:
       \[
       \text{Distance} = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}
       \]
       where \((x_1, y_1) = (0, 0)\) and \((x_2, y_2) = (-4, -3)\).
         ○ Calculate:
       \[
       \text{Distance} = \sqrt{(-4 - 0)^2 + (-3 - 0)^2} = \sqrt{(-4)^2 + (-3)^2} = \sqrt{16 + 9} = \sqrt{25} = 5 \text{ km}
       \]
     Therefore, the person is *5 km* away from the starting point.