It is the hight _ _ _ selfishness _ _ man to deny the advantage hidden _ _ _ _ _ _ join family system _ _ _ _a complete happy life _ _ _ _ today's world
There are at least two and probably three mistakes in this exercise. (height, joining? family system (article)) Can you check the original again? Kind regards, Michael
It's the height of selfishness of man to deny the advantage hidden in joint family system for a complete happy life in today's world.
In that case, the person who set the exercise has some problems with the English language, and should have asked for help before giving it to students. Sorry to give you this bad news.
How it is possible this question is belong to our last year paper.
"hidden in joint family system" is wrong.
We need clarification from the questioner before we take this further, in my view.