Osteocytes are cells that are found in bone tissue. They are responsible for maintaining the health and functionality of the bone. Option 1, "Bone," is the correct answer. Osteocytes are embedded within the bone matrix and are connected to each other and to the blood supply through tiny channels called canaliculi. This allows them to communicate and transfer nutrients and waste products throughout the bone. Osteocytes also play a role in bone remodeling, which is the process of breaking down and rebuilding bone tissue. They help regulate the balance between bone formation and bone resorption, ensuring that the bone remains strong and structurally sound. In summary, osteocytes are specialized cells that are essential for the maintenance and function of bone tissue.