Which of the following is not a public health measure that would prevent disease?
a. monitoring and regulating food and water.
b. promoting vaccinations
c. promoting appropriate behaviors
d. exposing individuals to diseases to build active immunity.
i think d not sure though

this website is for anybody really not just for girls just saying, also while a lot of males are mean and you know there are the few who are kind and then there's the nice-guys but then theirs also guys like me who are shy we don't get out much because there are people like you who exist who would most likely punch a guy in the face so next time just think about things before you post them to a website where guys and girls can see your question.

1. is geographic distribution

2 is increasing complexity

3 is transitional forms