Which benefits occur once a person stops smoking? check all that apply. a return to normal oxygen levels decrease in alcohol dependency decrease in risk of male infertility fewer problems during pregnancy reduction in exposure to secondhand smoke

Benefits that occur once an individual quits smoking are the return to normal oxygen levels, decreases in the risk of male infertility and fewer problems during pregnancy, and reduction in exposure to secondhand smoke. I hope this helps and I apologize if my answer is wrong.