Which of the following provides the strongest justification for the decision to separate the archaea and bacteria into two different domains?
a. archaea have very ancient forms of dna while those found in bacteria are more recently evolved
b. archaeas keep their dna in a nucleoid while bacteria allow their dna to float to the center of the cell
c. archaea form endosorespores for protection from harsh environments while bacteria produce flagella instead
d. archaea do not form their cell wall from peptidoglycan while bacteria do