A. Kidney
A.
B. Liver
B.
C. Heart
C.
D. Stomach
D.
Correct Answer: B
সঠিক উত্তর: B
Explanation
ব্যাখ্যা
The liver is the organ responsible for producing urea through a process called the urea cycle, where ammonia is converted into urea, a nitrogenous waste product.