Q: After passing through capillaries and being filtered, clean blood leaves what organ through a vein?


Read this paragraph and choose the correct option from the provided answers:

Blood with wastes enters each kidney through an artery, which branches into many capillaries. After passing through capillaries and being filtered, the clean blood leaves the kidney through a vein.

 Choices:

- pancreas

- liver

- heart

- kidney


A:
kidney