C. a person who is in a monogamous relationship and has protected sex.
Contact a helpline and see therapist
what is this for, why do you need an answer?
Oxygen and Carbon Dioxide
What advice would a personal trainer most likely give you before a workout?
Answer: Out of all the options shown above the one that best represents the advice that a personal trainer would more than likely give you before a workout is answer choice c. Stretch at the end of your workout. The reason being that this will help your body recuperate faster and you won't be as sore the next day.
I hope it helps, Regards.