Where is nahda dam in Africa

Can someone me with this plz? ! i'm putting 20 points on it!

Where does the availability of water pose the greatest problem

Which of the following was not an effect of bolsa familia and the program to erradicate child labor (peti)? a. child labor was eliminated in brazil. b. 40 million families were lifted out of the lowest income level. c. the average years of schooling increased. d. more children began to graduate from high school.