Most countries in the African Transition Zone have a _____ population in the north and a _____ population in the south.

Most countries in the African Transition Zone have a _____ population in the north and a _____ population in the south. 
a) relatively large/sparse 
b) Muslim/Christian-animist 
c) non-Muslim/Muslim 
d) African/Saharan 
e) sedentary/nomadic 

Answer: b) Muslim/Christian-animist.