Question

which is one purpose for providing additional resources at the end of an informational text?
to prove that there are no counterclaims for the facts provided by the author
to make it unnecessary for the reader to do additional research
to show that the author established claims by doing credible research
to provide information to the reader on topics unrelated to the text

Explanation:

Additional resources at the end of an informational text serve to cite credible sources the author used, which validates that their claims are rooted in reliable research. The other options are incorrect: counterclaims can still exist, the resources often encourage further research, and they relate to the text's topic.

Answer:

to show that the author established claims by doing credible research