Which of the following describes the Incas? A) They wrote in hieroglyphics on accordion fold book called a codex. B) They believed to feed the gods they had to perform human sacrifices daily. C) They had no writing system but kept records on abacuses. D) They had no writing system but kept records on knotted cords or quipu.

The answer is D

Explanation:

A quipu, or knot-record (also called khipu), was a method used by the Incas and other ancient Andean cultures to keep records and communicate information. In the absence of an alphabetic writing system, this simple and highly portable device achieved a surprising degree of precision and flexibility.

i think the right answer is D