Along with removing drugs from the body, the kidneys also a. balance ph levels b. release hormones that regulate blood pressure c. release hormones into the stomach d. a and b

The correct answer is option A and B.

Explanation:

The kidneys play an essential role in sustaining a constant internal environment, that is, it does a vital role in maintaining homeostasis. The kidneys apart from removing toxic and drugs from the body helps in the regulation of pH by preventing blood plasma from turning too basic or too acidic by regulating ions.  

The kidneys also produce hormones like erythropoietin that instigates the production of red blood cells and renin that assists in monitoring the balance of salt and water and blood pressure in the body.