Genes are passed down so if someone in your family is an addict you're more likely to be.
I believe is true
For example, the pressure of becoming an adult, the progression of each school year like harder classes and tests, etc
You can't stay a kid forever is what most people say so it should be true
You should were safety gloves and a water or liquid resistant suit and protective booties
The correct answer is "exercise"
By meaning, reinforcement means to make something stronger. In the context of relationship it means strong and deep human relationships.
Thus, reinforcement is an exercise in the relationship.