The answer is: 
B) The number of students who smoked electronic cigarettes increased slowly between 2011 and 2016. 
According to the excerpt from "Youth and Tobacco Use," the number of middle school students who smoked electronic cigarettes had a low increment of 0.6% in 2011. At the same time, the percentage of high school students raised 1.5% during the same period.
The rest of the alternatives are incorrect because they do not express the main or the entire purpose of the paragraph.
 
        
             
        
        
        
B. Andreas first daughter was born in 2015. 
Corrected: 
Andrea’s first daughter was born in 2015.
        
             
        
        
        
Answer:
Yes
Explanation:
I just want to know so I can help you further, you could do "One reason how video games.." or "The second way video games...".
 
        
                    
             
        
        
        
Your answer would be A, that I borrowed from the library
When trying to figure out what an adjective clause is ask the two questions
which and what? So what book? Which book? 
Hope this helps :)