Which of the following conditions is conducive to mold growth?

Mold growth is largely influenced by environmental conditions, and high relative humidity is one of the key factors that create a suitable environment for mold. Mold spores thrive in damp conditions, often requiring a relative humidity of above 60% for optimal growth. When relative humidity is high, moisture particles are present in the air, providing the necessary hydration that mold needs to colonize and grow on various surfaces.

While cold temperatures can limit mold growth to some degree, they do not eliminate the potential for mold development, especially if moisture is present. Low moisture levels directly inhibit mold growth since mold requires a certain amount of water to flourish. Proper ventilation is also crucial in managing humidity levels and preventing moisture accumulation, but it does not create conditions for growth on its own—rather, it helps mitigate those conditions.

Understanding these relationships is important for mold inspectors who need to assess environments accurately and determine when conditions may pose a risk for mold proliferation.