He means he will show them pain. It is just a exaggeration
The correct answer should be B. what size paper should be used?
1) water scarcity
2)food insecurity, irrigate
3)young people, gather
4) sanitation, contaminate
5) replenished, water table
I believe the correct answer above is A. i wasnt sure about the editing part but i know that drafting is the first thing you do