Scientific knowledge is based on all of these except A)
rigorous testing
B)
small sample sizes.
publication and peer review
D)
acceptance in the scientific community

B) small sample sizes

Explanation:

I did it on usa test prep and got it right

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands