Which of the following documents are considered primary sources?

You have not mentioned any options to chose from! However, still its super easy to identify Primary Sources and Secondary sources so I'll teach you that!

Explanation:

Primary sources means that you have direct access to the information and you do not have to rely on another party to gain access or to moderate that information.

However, Secondary sources are not like that. Secondary sources contain information extracted and prepared by other researchers and institutions.

Primary sources are more reliable than secondary sources as you can directly access and validate the authenticity of the information and data.

In addition, secondary sources help to explain new or different positions and ideas about primary sources.