How do scholars think the inca used the quipu?
a. as a writing system to record information about the ruler
b. as part of the costume of the priest when preforming rituals
c. as a weapon, similar to an axe, to enforce laws in the kingdom
d. as a record-keeping system to keep track of economic information.

The correct answer is:

D. as a record keeping system to keep track of economic information.

Explanation:

Quipus, also known as khipus or talking knots, were registering devices historically used in a number of cultures and particularly in the region of Andean South America. The cords included numeric and other values encoded by knots in a base ten positional system. The only potential Incan example of encoding and recording information could have been cryptic knotted strings identified as khipu.

these acts divided the south into five military districts.