Would you like to visit a volcano?why?why not?

No, because what if the lava come out of the volcano and it start coming down the volcano very fast and you start to run but, the lava catches up with you and burns you (basically kills you). What you going to do? You going to do nothing because, you are going to be dead as every you not coming back alive. So that’s why I would never visit an volcano.

The answer is- 
B) To explain the obstacles to achieving integration. 
B is the only one that makes sense