answer please

Question 66 (1 point) Being able to predict population changes is important for the human population because it affects our social, economic and environmental well-being. However, it is difficult to make accurate predictions because: C ) age-specific survival rates can change over time C ) age-specific birth rates can change over time C ) the number of people wishing to immigrate to Australia can change over time (_) the immigration policy of governments can change and alter the number of ~ immigrants (_) all of the above are true