Lead exposure in buildings is particularly associated with which of the following?

Lead exposure in buildings is particularly associated with paint and piping in structures due to the historical use of lead-based paint and leaded plumbing materials. Before the dangers of lead were fully recognized, lead was commonly used in paints, especially in homes built prior to 1978 when the U.S. banned residential use of lead-based paint. In these structures, deteriorating lead paint can release lead dust or chips, posing serious health risks, particularly to children.

Additionally, lead was often used in plumbing systems, including pipes and solder, which can leach lead into drinking water, contributing to lead exposure. This context highlights why option A is the most relevant answer when considering common sources of lead exposure in older buildings, as compared to the other options where lead is typically not a pervasive concern.