In The Principles of Newspeak, the appendix to the 1949 novel, Orwell explains that Newspeak usage follows most of the English grammar, yet is a language characterised by a continually diminishing vocabulary; complete thoughts reduced to simple terms of simplistic meaning.
Animals with an internal skeleton made of bone are called vertebrates. Vertebrates include fish, amphibians, reptiles, birds, mammals, primates, rodents and marsupials.
Now ALL animal species are related if you go back far enough. This question is asking which group is the most recent relative of vertebrates. A.crustceans B.poriferia C.cnidarians D.chordates E.platyhelminthes Answer Key: D Feedback: Remember with only a few exceptions Chordate means Vertebrate.