Final answer:
The excretory system includes nephrons that filter waste products from the blood and produce urine.
Step-by-step explanation:
The excretory system is responsible for removing waste products from the body. One of the main components of the excretory system is the nephrons. Nephrons are tiny structures in the kidneys that filter waste products from the blood and produce urine. Therefore, the correct answer to your question is option OC, nephrons.
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