C. pancreas
Its a gland near the stomach which secretes a fluid into the duodenum to help with food digestion. The fluid contains protease, carbohydrase and lipase, which breaks down larger molecules into smaller pieces. The pancreas also produces the hormones insulin and glucagon which regulate blood sugar. These hormones are released into the cardiovascular system.
<span>Adenine and guanine are both found in DNA and RNA</span>
I would say b and a don't quote me if I'm wrong :P
The answer is ions, compounds & neutrons don’t really make sense & isotopes are different from everything this question is asking
