The organ that removes soluble wastes from the body is the kidneys.

Here's why:

* Filtering Blood: The kidneys filter waste products, excess water, and electrolytes from the blood.

* Producing Urine: These waste products are then concentrated into urine.

* Maintaining Homeostasis: The kidneys play a crucial role in maintaining the balance of fluids, electrolytes, and other substances in the body.

While other organs contribute to waste removal (e.g., the liver processes toxins), the kidneys are the primary organ responsible for filtering soluble wastes from the bloodstream.