A. 89%
B. 77%
C. 96%
D. 73%
🧠 Explanation:
The human brain is about 73% water, crucial for its function and health. Water supports cognitive processes, like memory and focus, by maintaining cell hydration and nutrient transport. Dehydration can impair brain performance, making this a key topic in neuroscience and wellness. It’s relevant for students, educators, and health enthusiasts exploring how hydration impacts mental clarity and overall well-being. This fact underscores the importance of drinking enough water daily, making it a popular subject in health education and lifestyle discussions focused on optimizing brain function and preventing cognitive decline.