It breaks away the lung causing them to fail or even get cancer
The two individuals may have a different reaction to the same stressor because they each have different tolerability so whereas one could be fine the other could have a bad response. hope this helps.
I say D would be the best answer for this question.
Neither of these would do, unless he wants to ask his friends if they want to do running with him, or do some sort of physical activity.
Answer:
I would say that the consequence of abstaining and not having sex as a teenager would be that someone who abstains does not end up prematurely pregnant or exposed to STI's and STD's from sexual partners, seeing as they have none. This also allows a person to mentally mature and become an adult before that becomes a concern.