Examine the headlines in this newspaper

what are local authorities doing to fix the problem

explanation:

the answer is b: the religion they practice.

here's why:

there were many different native american tribes and those with similar characteristics formed a main tribe or nation. each had its own language, religion and customs.

new evidence is discovered.

oversights and errors are corrected,

new technology is applied to evidence.

the first forms of writing came from them in the form of pictographs around 3100 bc.