A biologist discovers a new animal in a marine environment that has hexagonal radial symmetry. Of the following methods, which will best help him classify this organism with the deuterostomes or with some other group such as the ctenophores, sponges, or placozoans?
A.) Dissect the animal to see whether or not it has a notochord. B.) Raise the animal in the lab and trace its embryological development. C.) Observe the animal's feeding behavior. D.) Analyze the animal's mode of reproduction.

B.) Raise the animal in the lab and trace its embryological development

Explanation:Embryological development is the process through which embryos forms and develop in animals,embryological development can also be termed as EMBRYOGENESIS. The best way classifying the organism will be by raising the organism in the lab,to understand the organism's Embryological development, this will help to know the embryonic stages and patterns of development which takes place in the organisms.

the denominator has a very specific role.

hey, i believe your answer would be d. sugar ribose and the base uracil. i believe this is the answer, because rna consists of sugar ribose, adenine, guanine, cytosine, and uracil.

your first option is incorrect, because that's dna. where it consists of sugar deoxyribose, adenine, guanine, cytosine and thymine.

your second option is also incorrect, this is because sugar deoxyribose is in dna, and uracil is in rna. these two do not make sense together.

your third option being incorrect, because sugar ribose is in rna, but not the base of thymine. rna consists of uracil, not thymine.

lastly your fourth option being correct! this answer is correct, because both sugar ribose, and the base uracil are in rna! ~

answer is d. sugar ribose and the base uracil.