Answer.
C.Sub-Saharan Africa
Explanation
The data from US-AID indicates that newborn and child mortality rates are the highest in this region that accounts for 38% of global neonatal deaths where in 2011 the newborn death rate was 34 deaths in 1000 live birth. The countries that are among the top ten nations with greatest percentage decline in under the age of five mortality rates are Rwanda, Liberia and Malawi.
