Answer:
I don't know for sure but I think it is intensity
Explanation:
The Principle of Intensity
it is bad for you not to eat for a day or two just to lose weight
The answer is A. Transition
Divorce and changing schools is also considered a transitions.
An enviromental change could trigger a drug abuse for teens because it forced them to adapt (socialize with friends, etc)
Sedentary lifestyle, alcohol and drug use, Tobacco, sexual activity, dangerous behavior, and poor nutrition.