Major public health achievements of the 20th century include a) pharmaceutical products. b) mental health counseling c) lower birth rates. d) workplace safety.

I think it is A (or B)

hope this helps

a and b

explanation:

kids everywhere still make slurs just not publicly because of the media precense of the issue and you cannot speak for every family in this survey.

answer; genes dictate the production of specific enzymes, and affected individuals have genetic defects that cause them to lack certain enzymes;