What is the primary requirement for mold to grow?

The primary requirement for mold growth involves three essential elements: a suitable temperature range, a source of nutrients, and sufficient moisture. Mold thrives in conditions where the temperature is between 40 to 100°F, which is generally conducive to various molds. Additionally, mold requires an organic material—such as wood, drywall, or other organic substances—as a food source, and it needs water to survive and reproduce. Moisture is crucial because it helps the mold spores to germinate and grow.

In contrast, low temperatures and minimal moisture, as mentioned in the first option, are less conducive to mold growth. Similarly, dry conditions and high airflow would not support mold proliferation, as mold typically requires damp conditions. Lastly, stating that there are no specific requirements disregards the basic biological needs of mold organisms, which necessitate particular conditions for growth. Thus, the clear and correct choice is the one that encompasses the necessary temperature, food source, and moisture required for mold to thrive.