What is a notable aspect of 'installations' in contemporary art?

In contemporary art, a notable aspect of installations is their emphasis on interactivity with the audience. This approach is central to the concept of installations, as they are often designed to engage viewers on multiple sensory levels, encouraging them to explore and interact with the artwork in a physical space. The intention behind this interactivity is to create a participatory experience, transforming the audience from mere observers into active participants. This engagement can take various forms, such as inviting the viewer to walk through the work, touch elements, or even contribute creatively to the installation itself.

The other options do not accurately represent the defining characteristics of installations. For instance, installations are not typically confined to fixed locations; they can be temporary and move between different spaces. They also extend beyond just two-dimensional representations, often incorporating three-dimensional elements, sound, light, and multimedia components. While some installations may include text descriptions, relying heavily on text does not capture the essence of what makes an installation impactful; the experience is primarily derived from the spatial and sensory engagement involved.