Answer:
Quipu
Explanation:
In the Incas language, Quechua, Quipu meant knots.
The Incas did not have written language so, they developed a unique form record keeping and documentation. This form of record-keeping is known as Quipu.
<u>Quipu was invented by Andean American Culture. In this, different colors of strings are used to refer to different things. The codes and numbers were encoded with a string. The string used in Quipu was of cotton fiber.</u>
Incas used this form language to maintain the records, collecting data, dates information or calendars, etc.
So, the correct answer is Quipu.