I'm positive that it's the larynx since; the pancreas is an organ behind the stomach, the hypothalamus is a part of the brain, and the thyroid is a part of the neck. The larynx is commonly known as your voice box, helps you speak. That's a part of your respiratory system.
Explanation:
Law of conservation states that energy can neither be nor destroyed but can be converted from one form to another.So as such recycling is one of the agents that conserves energy
The correct answer is b. Osteoporosis