A.
For developing nations, first of all, they will throw off poverty. To throw it off, they have to find a way to develop fairly rapidlly.
B.
To developing nations, first of all, they will throw off poverty. To throw it off, a way has to be found to develop fairly rapidly.
C.
For developing nations, the first thing is to throw off poverty. To do that, they have to find a way to develop fairly rapidly.
D.
To developing nations, the first thing is to throw off poverty. To do that, a way has to be found to develop fairly rapidly.