Which factor is least likely to be affected by adverse site conditions?

The quality of materials is least likely to be affected by adverse site conditions because the materials used in construction are generally sourced and evaluated prior to their delivery to the site. While adverse site conditions, such as extreme weather or difficult terrain, can impact the overall progress of the project, they do not typically alter the intrinsic quality of the materials themselves. Quality is determined by the specifications and standards met in the manufacturing and selection processes.

In contrast, adverse site conditions can significantly influence factors such as weather delays, where mud or rain might halt work on-site; terrain challenges, which can complicate the movement and placement of materials; and unforeseen obstacles, which may arise during excavation or site preparation that can disrupt the construction process. These factors are more directly affected by the conditions present at the site, whereas the quality of materials remains consistent unless there are issues with sourcing or handling prior to reaching the site.