Which statement is true regarding landscape irrigation history?

The statement that landscape irrigation developed significantly during the 20th century is accurate because it reflects key advancements in technology, design, and methods used in irrigation practices. The 20th century saw the introduction of modern irrigation systems, including drip irrigation, sprinkler systems, and the use of timers and controllers that allowed for more efficient water application. These innovations made it easier to irrigate larger areas and more diverse types of landscapes, including urban parks and residential gardens, effectively transforming how irrigation is approached in both agricultural and non-agricultural settings.

Additionally, the increasing awareness of water conservation, along with the development of more sustainable practices, contributed to significant improvements in landscape irrigation during this period. In contrast, the other statements do not accurately capture the evolution of landscape irrigation. For instance, while irrigation has historical roots in rural areas, it has expanded to urban zones; saying it was only popularized in the 21st century misrepresents the longer history and growing trends seen in the earlier century. Finally, the notion that it has remained unchanged for centuries does not acknowledge the substantial technological and methodological advancements made throughout its history.