What is the main idea of the first article? a. the incas had a rich and sophisticated culture b. the incas kept records with a knotted string system. c. the incas lost many traditions after the spanish conquest d. the incas were conquered because of their primitive culture. what for the inca word quipu mean? a. knot b. string c. object d. number for which modern day career would a quipucsmayoc be mist suited? a. doctor b. lawyer c. teacher d. accountant