Do I really have to choose?  Both of it is not good for it violates the rights of every child.  But if I have to choose, I would go for child labor than begging.  In begging, the kid will not have any motivation as he could earn money that easy just by asking for money.  Unlike when a child works, he will know the value of every hardships he experienced while working just to have an earning.  He would then strive so hard and would be motivated to seriously do something about it.  To eliminate poverty in his entity.