Final answer:
The excretory system removes waste from the body.
Step-by-step explanation:
The correct answer is A. Excretory system. The excretory system is responsible for removing waste products from the body. It includes organs such as the kidneys, bladder, and skin, which eliminate waste materials like urea, excess salts, and water. For example, the kidneys filter blood, removing waste products and excess water to form urine, which is then excreted from the body through the bladder.
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