To make the text more detailed and more intresting, to catch their attention
        
             
        
        
        
General Israel Putnam told his men "Dont fire until you see the whites of there eyes because some of them were too eagar to shoot and he wanted them to shoot at close range so they could hit the enemy. This also saved ammunition and helped them fight better.
        
                    
             
        
        
        
Answer : B. some of the police force
Among the choices above, it is the phrase in letter b wherein the pronoun "some" refers to a single noun which is " the police force". As you can see, the police force refers to a group of policemen making it a collective noun taking the singular form of the verb. The other objects of the pronoun "some" in the other options are all in plural form such as economy cars, native people, and the 6y foods.
        
                    
             
        
        
        
I agree I also think it is B. its the only one that makes any sense
        
                    
             
        
        
        
Answer:
In the book Tuesdays, Morrie feels liable because he thought the rain caused David to get polio and they played outdoors instead of going inside when it rained.