A) Coral
B) Ascidia
C) Octopus
D) King crab
Correct Answer: D
Solution :
King crab or horse shoe crab are a superfamily of crab-like decaped crustaceans chiefly found in cold seas. They are generally thought to be derived from hermit crab (the ancestors). It is considered as a living fossil because it has been on earth for millions of years.
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