Which Statement About People Living in Affluent Countries Is TRUE

Which statement about people living in affluent countries is TRUE?

A) They are less likely to be able to protect themselves from parasitic diseases.
B) They are less able to immunize their children against vaccine-preventable diseases.
C) They are more likely to live in conditions under which diseases such as tuberculosis are likely to spread.
D) They are more likely to have access to the knowledge of precautions against diarrheal diseases.