Which artwork is an example of the Earth Art movement?

The choice of Robert Smithson's "Spiral Jetty" as an example of the Earth Art movement is particularly relevant due to its definition and intentions. Earth Art, also known as Land Art, emerged in the late 1960s and early 1970s, focusing on the natural landscape and utilizing natural materials to create large-scale artworks that often interacted with their surroundings.

"Spiral Jetty," created in 1970, exemplifies these principles vividly. The artwork is situated at the northeastern shore of the Great Salt Lake in Utah and is made from earth, rocks, and water. Its spiral form not only engages with the geological and environmental elements of the site but also reflects the artist's interest in entropy and the natural processes of the landscape. The choice of materials directly emphasizes the relationship between art and nature, a hallmark of the Earth Art movement.

The other options, while significant in their own rights, do not fit squarely within the parameters of Earth Art as closely as "Spiral Jetty." Andy Goldsworthy’s "Stone River" is a notable work that can also be associated with Land Art due to its use of natural materials, but it primarily emphasizes ephemeral creations rather than large-scale land modifications. Richard Serra's