I think its the neuron because a diploid cell is doubled normally in the bones
A. Is the right answer.
Here is a diagram of blood flow
The kidneys filter the blood to remove waste products, which they convert into urine. Urine is carried from each kidney, through a tube called a ureter to the bladder, where it is stored. The ureter and blood vessels enter and exit the kidney through the renal hilum.
A. The patient can have easy access to them.