Which term describes a condition of physical and mental well-being achieved by designing an internal climatic environment?

• A. Environmental comfort
• B. Weather comfort
• C. Thermal comfort
• D. Human comfort

Answer: (C)

Thermal comfort is the state in which occupants feel physically and mentally at ease with the indoor climate. It’s achieved by balancing temperature, humidity, air movement, and radiant heat from surfaces with the people inside (their activity level and clothing). This interplay makes the space feel right, supporting well-being and focus, which is exactly what the question describes as a condition of well-being created by designing the internal climate. The other terms are broader or refer to different contexts (environmental comfort includes more than temperature and air, weather comfort is about outdoors, human comfort is too general), so they don’t pinpoint the indoor-climate well-being outcome as accurately.