Question

this organ filters fluid from the blood, excretes waste products via urine, and controls ph level and blood pressure. urinary bladder kidney spleen adrenal gland

Explanation:

The kidneys filter blood, excrete waste as urine, and regulate pH and blood - pressure. The urinary bladder stores urine, the spleen is involved in immune function and blood - cell regulation, and the adrenal gland is related to hormone production.

Answer:

Kidney