Answer:
A clockwise rotation.
Step-by-step explanation:
The rule for 90 degree clockwise rotation is (x,y) turns into (y,-x) therefore if you use your numbers (2,-6) and then use the 90 degree clockwise rotation rule it becomes (-6,-2)
 
        
             
        
        
        
I guess this is a geometric series:
a6 = a1 * r^5 so
a1 =  0.03125 / 0.5^5
=  1    answer
 
        
                    
             
        
        
        
The answer is has to be D