Until the late 1970s,there was no "Domain" of scientific naming as the broadest category in taxonomy.Kingdom Monera included similar microscopic organisms of Eubacteria and Archebacteria.Other kingdoms,Protista,Plantae,Fungi and Animalia were also named.Researchers proposed the Domain to account for distinction beyond existing differences discovered between the bacteria-like organisms.Which type of information led most directly to the support and adoption of the broader category of Domain,and subsequent Domains of Bacteria,Archaea and Eukarya?
A) Differences in DNA among the existing Kingdoms showed need for a broader naming category. B) Cell shapes of the Bacteria and Archaea were found to be more distinct, after microscope technology improved. C) More complex emergent properties developed after organisms were originally categorized to Kingdoms. D) Evolution led to new adaptations and diversity of organisms.