Which phylum is the only one with members that exhibit radial symmetry and the first to have True tissue?

Name: Which phylum is the only one with members that exhibit radial symmetry and the first to have True tissue?
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Cnidaria is the only phylum among the options given that has members exhibiting radial symmetry and is also the first to have true tissues. Porifera (sponges) do not have true tissues, while Platyhelminthes (flatworms) and Mollusca (mollusks) exhibit bilateral symmetry.

Which Phylum Is the Only One with Members That Exhibit