Answer:
The need to know, to explore, and to understand.
Just these for words above, these can be very dangerous for ones means of a person. These would actually be known to be called a "eating disorder". AS a person would then have some strange eating behavior, they would just eat for the fun of it. This can harm them, which this can lead to being extremely harmful. And this would be the key word of those above.
I would say B. a strong personal commitment, because if you really don't want to quit, then you're not going to try at all. If it is set in stone in your head that you will quit, then you're more likely to resist the temptations that will come your way. I know this because a family member smoked for almost her whole life, and because she really wanted to quit, and knew she had to, she did it.
Viral sexual diseases are sometimes treatable but have no cure.