Explain the nature of pancreas.

Pancreas is known as heterocrine organ because it produces insulin into the blood and function is known as endocrine and exocrine function is which the enzymes enter into digestive path.

the answer for your question is b.

with the development of the times, more and more chemical reagents or drugs (such as ox bile/bile extract powder (ox bile desiccated), dried or desiccated which contains ox bile acids. this powder is specifically been developed for pharmaceutical industry. for more information: ) for the pharmaceutical industry use, its supervision can not be ignored.