The graph below shows the percentage of Latin American immigrants by age group. Which reason BEST explains why the largest percentage of immigrants are 30–39 years old?
A.People in this age group have the best means and opportunity to immigrate.
B.People in this age group are exploited the most in their native countries.
C.People in this age group are the least patriotic to their native countries.
D.People in this age group are granted visas more easily than others.