Answer:
The answer is vertebrate.
Explanation:
Vertebrates are those animals that have a central spinal cord. Fish, Chicken and rabbit can be classified as vertebrates because they all have a spinal cord. The vertebrate is a big term that is further divided into different classes for example Fish, amphibians, mammals, avian, and reptiles,
Uhh no offense but this question makes no sense (to me any ways)
Type A - AA or AO
Type B - BB or BO
Type AB - AB
Type O - OO