Some examples of a Primary Source are: Letter
Professor's Website on Civil War
Articles of Clothing
Textbook

A: Letter

and

C: Articles of Clothing

Explanation:

Primary Sources are immediate, first-hand accounts of a topic, from people who had a direct connection with it. Primary sources can include; Texts of laws and other original documents. Newspaper reports, by reporters who witnessed an event or who quote people who did.

the correct answer is individualism and exchange. at this stage, children begin to question the rules, because they can see that there is more than one side to them. different individuals have different viewpoints. they won't be able to reach this stage because of ignorance, a lack of ethics or personal biases. that is because people with that characteristiscs are not able to distinguish what is good or what is bad and they can't pursue their individual interests.