Hey there! 
The answer is D. 1/5 
An explanation is in the attached image below. 
Hope this helps!
 
        
        
        
Answer:
One sample test of proportions
Step-by-step explanation:
Which test is most appropriate to test whether the proportion of skiers is not 0.50?
Since the test says to test whether the proportion of skiers is not 0.50, then here we will be studying just only the promotion of skiers without the comparison with snowboarders.
We have been given an hypothesized promotion and the test says to test against this proportion, so the appropriate test to use here is the one sample test of proportions
 
        
             
        
        
        
Answer:
7234.56
Step-by-step explanation:
Using 3.14 as pi the answer is
 
        
             
        
        
        
It looks like there’s a pattern going on here so i believe it would be B