The Chatot (also Chacato or Chactoo) were a Native American tribe who lived in the upper Apalachicola River and Chipola River basins in what is now Florida. They spoke a Muskogean language, which may have been the same as that of the Pensacola people.
The Chactoo had conversations in their own language.
The statement is definitely correct because the context says that they had a spoken Muskogean language, therefore, they must have communicated among themselves using it. I think this was difficult for the system because I tried to use a fact that is definitely implied while using as little of the text given in the context as possible.