Answer:
Protists are a diverse collection of organisms that do not fit into animal, plant, bacteria or fungi groups. While exceptions exist, they are primarily microscopic and made up of a single cell (unicellular), according to the educational website CK-12. 
 
        
             
        
        
        
point b i think, because you have to see the amount of steepness in the slope.
 
        
             
        
        
        
the answer is b, faster through steel than through air.