An experimenter attempting to measure the biodiversity of a region has made several measurements in different sampling areas of the region and plotted those values in a graph. The biodiversity of a region can be correctly represented by plotting _____ .

Options

1. Anumber of different species v s different sampling areas
2. Bnumber of individuals of a species vs different sampling areas
3. Cnumber of primary producers in the region v s different sampling areas
4. Dratio of number of land species to aquatic species vs different sampling areas