I believe the answer is: agricultural, fishing, and forestry job
Since these jobs tend to be located pretty far away from urban area, children protection service is much less likely to find occurence where children were included in the labour force. The majority of the children entered the labour force because their parents made them to.
Well it is a type of depression that one would feel in a loss and sometimes it is not bearable.
I would use D. Fact. Its about scientists so I would use some facts about them..
So more plants came be developed from other plants genetically,