Biology

The correct answer is:

A.To study and predict changes in the size and structure of populations over time.

Population growth models are mathematical frameworks used to understand how populations change over time, based on factors like birth rates, death rates, immigration, and emigration. These models help predict future population sizes, identify potential challenges (e.g., resource scarcity), and inform policy decisions. They are essential tools in fields like ecology, demography, and conservation biology.

Here's a brief look at why the other options are less relevant to population growth models:

B.To study the distribution of resources within a po...