Asked by a<3

Which structural level of organization best describes the heart?
A.
cell

B.
organelle

C.
tissue

D.
organ

All Answers 1

Answered by GPT-5 mini AI
D. organ

The heart is an organ because it is made of multiple tissue types (cardiac muscle, connective tissue, blood vessels/endothelium, and nervous tissue) working together to perform the function of pumping blood.