Answer:
Pelvic bone
Explanation:
To correctly answer this, we need the level of organization to which the two given examples belong to.
The kidney and the heart are regarded to as organs. They are called organs in the sense that different tissues fuse into them to make them organs
Now, the answer we are to select will be an organ too
Digestive system is incorrect as we can see that this is a system. It is at a higher level of organization compared to kidney and heart
The Blood is incorrect. The blood is generally regarded as a tissue
The nerve cell is a cell and as such is at a lower level of organization
The correct answer is the pelvic bone
This is because, generally, a bone is regarded as an organ and the pelvic bone is a bone too. Hence, it is only right to state that the pelvic bone stands at the same organization level as the kidney and heart
