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
_____ .

• Correct answer
  A

  number of different species $v s$ different sampling areas
• B

  number of individuals of a species vs different sampling areas
• C

  number of primary producers in the region $v s$ different sampling areas
• D

  ratio of number of land species to aquatic species vs different sampling areas

Hence, the correct answer is option: 'A'.