The correct answer is A) Migration out of stage 1 or 2 countries is higher than migration to it.
The statement about the effects of migration to countries in different stages of demographic transition that is true is "Migration out of stage 1 or 2 countries is higher than migration to it."
We are talking about the Demographic Transition Model was designed to help explain the modifications in population demographics. It is based on birth and death rate cycles and the different economic development stages. Stage 1 shows the world situation before the Industrial Revolution. Birth and death rates are high in this scenario. The population remains constant until wars or diseases change the numbers.