Given what you know about the geography and chronology of the Chavin and Nazca, what might explain the fact that the Chavin and Nazca both used underground aqueducts to transport water? The Nazca and the Chavin both used water for certain religious rituals.
The Nazca and the Chavin both adopted technology from the Maya.
The technology of the Chavin likely influenced the later Nazca.
The technology of the Nazca likely influenced the later Chavin.