Which of the following phyla have representatives that exhibit radial symmetry throughout their entire

lives?

A. Cnidarians

B. Mollusks

C. Arthropods

D. Annelids

A. Cnidarians is a phylum contains species of animals found in aquatic environments, they are predominantly marine animals. They have two basic body forms, medusae and sessile polyps, both of which are radially symmetrical with mouths surrounded by tentacles. All other options contain species which are not radially symmetrical