What are the components of the endocrine system mentioned?

The correct answer highlights important components of the endocrine system, which is a system of glands that release hormones into the bloodstream to regulate various bodily functions. Among the three components listed - the adrenal gland, pituitary gland, and pancreas - all play vital roles in hormone production and regulation.

The adrenal gland is responsible for producing hormones that help regulate metabolism, immune response, blood pressure, and stress response. The pituitary gland, often referred to as the "master gland," controls other endocrine glands and regulates critical body functions such as growth, metabolism, and reproduction through hormone release. The pancreas has both endocrine and exocrine functions, with its endocrine role primarily involving the regulation of blood sugar levels through the production of insulin and glucagon.

This combination of glands reflects the diverse roles of the endocrine system in maintaining homeostasis and ensuring that various physiological processes are coordinated effectively. The other options include glands or organs that may not all be directly involved in the endocrine system, thereby differentiating the correct answer.