Over the last century, paleontologists have used small differences between fossil specimens to classify triceratops into sixteen species. This classification is unjustified, however, since the specimens used to distinguish eleven of the species come from animals that lived in the same area at the same time.
Which of the following, if true, would enable the conclusion of the argument to be properly drawn?

Question

Examsnet · Accepted Answer

Correct Answer is :  No geographical area ever supports more than three similar species at the same time.

GMAT Verbal Reasoning Practice Test 7