Which statement regarding molds is true?

The statement that molds primarily affect the aesthetic surface is true because molds are fungi that typically grow on surfaces of materials where moisture is present. Although they can compromise structural integrity over time if the infestation is significant and if the material is continuously exposed to moisture, their initial impact is more cosmetic. Molds can discolor surfaces, create unpleasant odors, and potentially cause other aesthetic issues, which can be more immediately noticeable to homeowners. It is important to note that while molds may not immediately weaken wood, prolonged exposure to moisture and mold can lead to more serious structural problems.

In contrast, molds do not thrive in dry conditions, and their growth is significantly inhibited by low moisture levels. They are not dependent on sunlight to grow; in fact, many molds prefer damp, dark environments. Therefore, the initial focus on their aesthetic impact can guide appropriate action and remediation before more serious issues develop.