Question

to what part of the kidney is the arrow pointing? (1 point) renal artery calyx ureter medulla

Explanation:

The renal artery is the blood vessel that supplies oxygenated blood to the kidney. In the kidney diagram, the arrow is pointing to a blood - vessel - like structure. The calyx is a cup - like structure that collects urine. The ureter is a tube that carries urine from the kidney to the bladder. The medulla is the inner part of the kidney (not a blood vessel). Based on the function and appearance (blood - vessel - like in the diagram) of the renal artery, we can identify the part.

Answer:

renal artery