What architectural feature are clerestory windows typically placed above?

Clerestory windows are commonly placed above high walls or obstructions to allow natural light to penetrate deeper into a building while maintaining privacy and protecting from external elements. They are designed to be positioned high up, usually above other architectural features, which is why the correct answer pertains to lower roof elements. By installing clerestory windows above these elements, buildings can maximize daylight and contribute to a well-lit interior, enhancing the overall spatial experience. This placement not only serves a functional purpose of illumination but also creates an aesthetic quality, allowing for interesting play of light and shadow within the space.