Which of the following is an example of homeostasis?

Homeostasis refers to the process by which living organisms regulate their internal environment to maintain stable, constant conditions despite changes in the external environment. Examples of homeostasis include: 1. **Temperature Regulation**: Humans maintain a body temperature around 37°C (98.6°F) through sweating when hot and shivering when cold. 2. **Blood Sugar Levels**: The body regulates blood glucose levels through the action of insulin and glucagon. 3. **pH Balance**: The body maintains a stable pH in the blood, typically around 7.4, through various buffering systems. 4. **Water Balance**: The kidneys regulate water levels in the body by adjusting urine concentration based on hydration status. If you have specific examples to choose from, please provide them, and I can help identify which one represents homeostasis.