Which of the Following Phyla is a Deuterostome

Question

Which of the following phyla is a deuterostome?
A) Annelids
B) Mollusks
C) Flatworms
D) Arthropods
E) Echinoderms

Accepted Answer

Echinoderms are deuterostomes, which is a group characterized by their embryonic development; in deuterostomes, the anus develops before the mouth.