Which primary modification during Chinampa construction prevents submerged soil from excessively compacting?

💡 Explanation

When creating Chinampas, interwoven root systems bind the soil particles, resisting compaction due to the buoyant force of the surrounding water because plant roots enhance soil strength. Therefore, cohesive soil due to interwoven roots helps prevent compaction, rather than rock addition, clay barriers or drainage channels, which address other factors such as nutrient replenishment or water-logging.

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