Answer:
A. The prevalence of Type II diabetes 
Explanation:
A. The prevalence of Type II diabetes 
B. The number of sugary drinks consumed by a child during a day 
C. Both the prevalence of Type II diabetes and the number of sugary drinks consumed by a child during a day 
D. There is no dependent variable
The prevalence of Type II diabetes depends on number of sugary drinks consumed by a child each day 
If 
x = The prevalence of Type II diabetes 
y = number of sugary drinks consumed by a child each day 
Then,
x depends on y
The dependent variable is The prevalence of Type II diabetes