Answer:
A.
Step-by-step explanation:
This link will show you an animation of the angle bisection construction.
https://www.mathsisfun.com/geometry/construct-anglebisect.html
 
        
             
        
        
        
They are independent because they do not rely on each other.
        
                    
             
        
        
        
The correct answer is: D. (-3) + 2 = -1 
The other ones result in a positive sum:
A: 7 + (-5) = 2
B: 1 + (-1) = 0
C: (-3) + 4 = 1