Indoor air pollutants (e.g., VOCs, dust) can be reduced by improving ventilation, and operable windows allow fresh air to dilute and replace contaminated indoor air, per ASHRAE 62.1. Increasing humidity (A) may worsen mold, not pollutants. High-VOC materials (C) increase pollutants, the opposite of the goal. Decreasing temperature (D) affects comfort, not air quality directly. Operable windows (B) are a practical, effective solution for air quality improvement in many climates.
Verified Answer from Official Source:B - install operable windows
"Installing operable windows reduces indoor air pollutants by providing natural ventilation to dilute contaminants." (NCIDQ IDPX Study Guide, Section 2: Building Systems)
Explanation from Official Source:The NCIDQ aligns with ASHRAE standards, promoting operable windows as a sustainable method to enhance indoor air quality (IAQ) and occupant health.
Objectives:
Enhance indoor air quality (IDPX Objective 2.5).
[References:NCIDQ IDPX Study Guide, Chapter 2: Building Systems and Integration; ASHRAE 62.1., ]
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