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What is a key indicator that humidity levels may be contributing to mold growth?

  1. Cracks in walls

  2. High humidity levels

  3. Direct sunlight exposure

  4. Frequent cleaning

The correct answer is: High humidity levels

High humidity levels are a key indicator of potential mold growth because mold thrives in moist environments. When humidity levels exceed 60%, it creates a conducive environment for mold spores to germinate and proliferate. This is particularly true in areas where ventilation is poor, such as basements or bathrooms, making it essential to monitor humidity levels as part of mold assessment. While other factors listed, such as cracks in walls, can indicate structural issues that may allow moisture ingress, they do not directly correlate with humidity levels contributing to mold development. Direct sunlight exposure can help to reduce humidity and inhibit mold growth, while frequent cleaning can help to remove existing mold spores but does not directly indicate humidity levels. Hence, the focus on high humidity is crucial in understanding and addressing mold risks.