Which statement about the inca civilization does not characterize them as a civilization? a. the incan people grew surpluses of many food including sweet potatoes and tomatoes. b. incan people had many jobs, one of them being runners who were responsible for delivering messages. c. incan government was non-existent; they simply spoke the same language, which bonded their culture. d. the inca capital city of machu picchu was lost to the modern world until 1911.