B, C, D, B
I hope these are right, hope this helped.
Trichonympha lives in the gut of termites and digests cellulose eaten by the termite.
The study of one type of evidence of evolution is called embryology, the study of embryos. An embryo is an unborn (or unhatched) animal or human young in its earliest phases. Embryos of many different kinds of animals: mammals, birds, reptiles, fish, etc. look very similar and it is often difficult to tell them apart.