Which of the following is a common feature checked in a foundation inspection?

A common feature checked in a foundation inspection is signs of cracking or settling. This aspect is crucial because the foundation is the structural base of a building, and any visible signs of distress can indicate significant underlying issues. Cracks in the foundation can result from moisture problems, shifting soil, or structural overload, and they can lead to structural failure if not addressed properly. Noticing these signs early allows for timely repairs and can prevent more extensive damage.

While other choices involve important aspects of a building's condition, they do not relate directly to the structural integrity and safety of the foundation itself. For instance, paint quality pertains to aesthetic appeal rather than structural concern, window alignment is more about the framing and installation of windows than the foundation, and roof shingles condition deals with the roofing system, not the foundation. Thus, the focus of a foundation inspection is squarely on the functional and safety-related aspects that affect the building's stability.