Multiple Choice
Refer to the figure. 
Which of the animals shown in the figure has ball-and-socket joints between its spines and its endoskeleton?
A) Feather star (Comanthina schlegeli)
B) Sea urchin (Echinometra mathaei)
C) Sea cucumber (Bohadschia argus)
D) Sea star (Marthasterias glacialis)
E) Brittle star (Ophiarachna incrassata)
Correct Answer:
Verified
Correct Answer:
Verified
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