Biology

The correct answer is B. Endocrine.

The endocrine system is responsible for secreting chemical messages, known as hormones, to different parts of the body. Hormones are produced by various endocrine glands, which include the pituitary gland, thyroid gland, adrenal glands, pancreas, and others. These hormones are released into the bloodstream and travel to target cells or organs, where they regulate numerous physiological processes and maintain homeostasis.

Option A, the excretory system, is responsible for filtering the blood, removing waste products, and maintaining fluid and electrolyte balance. While the excretory system eliminates certain waste products from the body, it does not primarily secrete hormones.
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