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A. 7
B. 8
C. 9
D. 6

Submitted by: Ghulam.abbas

Octopuses have 9 brains because, in addition to the central brain, each of 8 arms has a mini-brain that allows it to act independently. Octopuses have blue blood because they have adapted to cold, low oxygen water by using hemocyanin, a copper rich protein.

Correct Answer: 9

Last Updated: June 21, 2022