Statement: Smoking is one of those human weaknesses which tend to test the will power of the smoker to the edge.
Conclusions:
I. It is very difficult for the smoker to give up smoking even if they want to do so.
II. Human beings have other weaknesses as well.
If both I and II follow
The statement mentions that a very strong will power is required to give up smoking and so it is very difficult. Thus, I follows. Also, it is mentioned that smoking is one of the human weaknesses. This means that there are other human weaknesses as well. So, II as follows.