When should a line graph be used? A. When there is no independent variable
B. when the independent variable is composed of categories and does not show a relationship.
C. When the independent variable is continuous and shows a casual link to the dependent variable.
D. When the independent variable is continuous and does not show a relationship to the dependent variable?

Line graphs are used to track changes over short and long periods of time. When smaller changes exist, line graphs are better to use than bar graphs. Line graphs can also be used to compare changes over the same period of time for more than one group.

Explanation:

as resources become scarce because of population growth, the growth decreases after few years due to lack of resources and food.

i think it’s c but i might be wrong. if i am let me know! have a good rest of your day as well!