Which works demonstrate that the chavín civilization was highly organized?
a systematic series of glyphs that provided religious information
ancient calendars that closely resembled modern versions
complex drainage systems to keep structures from flooding
tombstones and monuments that were arranged in a logical order

the works that demonstrate that the Chavín civilization was highly organized is : Complex drainage systems to keep structures from flooding Most of the people from this civilizations fulfill their basic needs from AGricultural activities. Historians has found some ruins in this civilization that is used as an irrigation system to use their water source efficiently, which proves how highly organized they are as a civilization