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.

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genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).