The demographic transition theory helps explaina. why people move. c.how migration is related to pull factors. b.how to gather the demographic statistics of a society. d.how population change is related to the technological development of a society.

D

Explanation:

Demographic transition theory is concerned with how population change is related to the technological development of a society.

Demographic transition is a theory that talks about two societies.

The economic development in areas with little technologies and education and the shift from high birth rates and high infant death , to low birth rates and low death rates in societies that are advanced technologically, in education and in economic development, and the stages between both groups.