Which best explains why archaeologists and historians do not have extensive information about the indus valley civilization? a. the people of the indus valley civilization began mixing with others in the region. b. the indus river overflowed its banks and destroyed the civilization's artifacts. c. the writing of the indus valley civilization has not been deciphered. d. the people of the indus valley civilization did not create art or pottery..

The correct answer is C. The writing of the Indus Valley civilization has not been deciphered

Explanation:

The Indus Valley Civilization was an Asian civilization from 3300 to 1300 BCE that lived in part of Afghanistan, Pakistan, India, Egypt, and Mesopotamia. The first discoveries of Indus script occurred in 1875  and 4000 more objects with Indus script have been found. However, it has been difficult for archeologist and historians to know the meaning of this symbols as the symbols found are short and it can not be determined if they represent  ideas (non-linguistic signs) or they belong to a writing system (letters), additionally, the Indus script has not been officially linked to any other language which makes it more difficult to decipher and thus, information contained in the scripts about the civilization is unknown.