Identify the function
    which generates the        
    K-map shown            
                            
2 is CORRECT. Plotting F=SUM m(1,3,5,6) on a K-map would result in 1-entries in cells 1,3,5, and 6, which is what you want. Note that for a 3 variable K-map the labels dictate the following order for the minterm cells:
                          0 2 6 4 
                          1 3 7 5