The answer is: [C]: <span>_________________________________________________ "the number of people who live in a square mile or kilometer" . _______________________________________________________
Let us examine the other answer choices: ________________________________ Answer choice: [A]: "</span><span>an increase in the number of people living in an area over time" — refers to: "population growth". </span>_____________________________________________ Answer choice: [B]: "<span>a decrease in the number of people living in an area over time" — refers to: "population decline"; or, "depopulation". </span><span>___________________________________________________ Answer choice [D]: "</span>the number of live births per one thousand people in a year" — refers to: "birth rate". (as opposed to: "the number of deaths per one thousand in people in one year" — which refers to the "death rate"; or, "fatality rate"). ___________________________________________________
