Which property of water allows humans to regulate body temperature?

• A. Low density as a solid
• B. High specific heat capacity
• C. High surface tension
• D. Universal solvent ability

Answer: (B)

Verified step by step guidance

1. Understand the concept of specific heat capacity: Specific heat capacity is the amount of heat energy required to raise the temperature of a substance by one degree Celsius. Water has a high specific heat capacity, meaning it can absorb and store a significant amount of heat without a rapid increase in temperature.
2. Relate specific heat capacity to body temperature regulation: In humans, water makes up a large portion of the body. The high specific heat capacity of water helps stabilize body temperature by absorbing excess heat during metabolic processes and releasing it slowly, preventing sudden temperature changes.
3. Compare the other properties of water: Low density as a solid, high surface tension, and universal solvent ability are important properties of water, but they do not directly contribute to temperature regulation in humans. For example, low density as a solid explains why ice floats, and universal solvent ability refers to water's ability to dissolve many substances.
4. Identify the correct property: Among the options provided, high specific heat capacity is the property of water that directly allows humans to regulate body temperature effectively.
5. Conclude the reasoning: The high specific heat capacity of water is crucial for maintaining homeostasis in humans, as it buffers temperature fluctuations and ensures stable internal conditions necessary for biological processes.