How Should the Scientist Draw a Graph of the Data

How should the scientist draw a graph of the data to best address the hypothesis?

A) Plot the heavy metal concentration on the y-axis and the relative amount of edge habitat on the x-axis.
B) Plot the total amount of edge habitat on the y-axis and the total amount of interior habitat on the x-axis.
C) Plot the number of birds on the y-axis and the size of the fragment on the x-axis.
D) Plot the density of insects on the y-axis and the total amount of edge habitat on the x-axis.