What is a common sign that indicates an increased likelihood of asbestos presence?

The correct choice highlights a critical factor in identifying the likelihood of asbestos presence: the age of the building and any past renovations. Buildings constructed before the late 1970s are more likely to contain asbestos in materials such as insulation, floor tiles, and textured paints due to the widespread use of asbestos during that period. Additionally, if renovations occurred in older structures, there might have been a higher chance of disturbing original materials that contain asbestos, especially if those renovations did not take into account asbestos safety protocols.

In contrast, newer constructions typically utilize modern materials that do not include asbestos, thereby reducing the risk of asbestos presence. Visible cracks in drywall may suggest structural issues or wear but do not directly indicate the presence of asbestos. Similarly, the installation of energy-efficient windows is also unrelated to the use of asbestos and may occur in both older and newer buildings. Thus, focusing on the age of the building along with any renovations provides the most relevant insight into the potential presence of asbestos.