Answer:
D. Endocrine glands
Step-by-step explanation:
Endocrine glands are glands that produce and secrete hormones, which are chemical substances that regulate the body's growth, metabolism, and function. Hormones are released into the bloodstream and travel to various parts of the body, where they can influence the activity of cells, tissues, and organs. Intestinal glands, gastric glands, and salivary glands are all types of exocrine glands, which produce and secrete substances such as enzymes, mucus, and saliva through ducts rather than directly into the bloodstream