Answer:
Hi. I think the answer is A.
Cells: 4
Tissue: 6
Organ: 8
Organ system: 1
Human body: 2
Explanation:
they have to evolve
1 - D- Transport oxygen-rich blood to the body
2- D- Common Beetle
3- D- Protects the brain from injury
4- D- Attach Bones to muscles and bones to bones.
