62.8k views
4 votes
3. Which of the following parts of the human body is most complex?

A.
heart
B.
kidney
C.
white blood cell
D.
central nervous system

2 Answers

6 votes
















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User Robro
by
5.3k points
5 votes
The answer would be d the central nervous system
User IlBeldus
by
5.1k points