Step 1: Concept
Major arteries are often named based on the organ they supply with oxygenated blood.
Step 2: Meaning
Blood must be delivered to the kidneys for filtration and to supply the renal tissues with oxygen.
Step 3: Analysis
Carotid supplies the head; Pulmonary goes to the lungs; Coronary supplies the heart muscle. "Renal" is the medical term related to the kidneys.
Step 4: Conclusion
Therefore, the renal artery is the one that carries blood to the kidneys.
Final Answer: (A)