Which aspect of "green building" can promote a healthier living environment?

Natural ventilation and daylighting are significant components of green building practices that contribute to a healthier living environment. Natural ventilation involves designing spaces to allow fresh air to circulate, reducing the reliance on mechanical air conditioning and improving indoor air quality. By encouraging airflow and limiting the buildup of pollutants, it enhances the overall comfort and health of the occupants.

Daylighting, on the other hand, refers to the strategic placement of windows and openings to maximize natural light entering spaces. This not only reduces the need for artificial lighting, thus lowering energy consumption but also positively impacts mood and well-being. Natural light can help regulate circadian rhythms, which play a crucial role in sleep patterns and overall health.

Both of these aspects are integral to green building certifications and contribute to energy efficiency, reduced environmental impact, and most importantly, a better quality of life for the inhabitants. The other options do not support a healthier living environment; for instance, multiple use of non-renewable resources and increased chemical emissions can harm both the environment and human health, while conventional plumbing systems may not offer the same sustainability benefits as modern, eco-friendly designs.