The correct option is B efferent arteriole
Blood is the circulatory fluid which carries respiratory gases such as oxygen and carbon dioxide. Blood also carries nitrogenous wastes released by body cells to kidneys for excretion.
Kidney has several millions of filtering units known as nephrons. Each nephron has the glomerulus and the renal tubule. Glomerulus is a tuft of capillaries formed by the afferent arteriole. Blood from other parts of the body is brought to the kidney by afferent arteriole. Blood is filtered here. Nitrogenous waste is excreted as urine while purified blood from the glomerulus is carried away by efferent arteriole.
Vena cava is the vein which carries blood from other parts of the body to heart.
The aorta is the main artery that carries blood away from your heart to the rest of your body.