A. crabs and crustaceans
A.
B. Cartilage
B.
C. effects on life at a very lower temperature
C.
D. heart
D.
Correct Answer: A
সঠিক উত্তর: A
Explanation
ব্যাখ্যা
Carcinology is a branch of zoology that studies crustaceans, a group of arthropods that includes lobsters, crayfish, shrimp, krill, copepods, barnacles, and crabs.