Answer the following question: You are presented with the question "Metabolic waste products can leave the body through" and the following answer choices: - burning coal - animal transport - Dehydration - radiative transfer - osmosis - convection - fossil fuels - a sphincter Now knowing that urine leaves the body through a sphincter in the process of urination and fluids in the urine eliminate metabolic waste products, choose the best answer.
Answer:
a sphincter