Organs receiving both arterial and venous blood Steps:

• Identify blood supply for kidney: solely oxygenated blood via renal artery.
• Identify blood supply for liver: oxygenated blood via hepatic artery and deoxygenated blood via portal vein.
• Identify blood supply for lung: deoxygenated blood via pulmonary artery and oxygenated blood via bronchial artery.
• Select pair where both organs receive mixed arterial and venous blood types.

Why C is correct:

• In circulatory physiology, the liver and lungs uniquely receive both oxygenated arterial blood and deoxygenated venous blood for their functions.

Why the others are wrong:

• A: Kidney receives only arterial blood, not venous.
• B: Kidney receives only arterial blood, not venous.
• D: Excludes liver, which also receives both types.

Final answer: C