D is the answer. Prolactin is secreted by the pituitary gland which is located at the base of the brain
B) Inhalation, breathing something in will have it enter your system the quickest
enteral, through eating or by mouth
topical, on the skin
parenteral, both trough eating/mouth or yer um... bum
CONDOMS SSSSSS LOT OF CONDOMS
I'd have to say 2 is the best answer, but I don't really know. Hope this helps!!