What is an inherent challenge associated with Land art?

Land art, also known as earthworks, involves creating art using natural materials in outdoor environments, which makes it intrinsically tied to the elements. An inherent challenge of this medium is that works can deteriorate due to environmental factors. Weather conditions, such as rain, wind, sunlight, and temperature fluctuations, can erode or change the physical properties of the materials used in the artwork, impacting its appearance and longevity. This connection to nature highlights the transient quality of Land art, as it is often subject to natural processes that artists may not fully control or predict.

The other options do not align with the fundamental characteristics of Land art. While it might require specific materials, the nature of those materials is often derived from the environment itself, rather than being expensive or easily reproducible. Land art typically diverges from strict adherence to traditional methods, as it embraces unconventional approaches to art-making.