Which Class of Echinoderms Has the Greatest Species Diversity

Question

Which class of echinoderms has the greatest species diversity?
A) Asteroidea
B) Holothuroidea
C) Ophiuroidea
D) Echinoidea
E) Crinoidea

Accepted Answer

Ophiuroidea, or brittle stars, represent the class of echinoderms with the greatest species diversity, comprising over 2,000 known species.