What are the pros and cons of primary sources and secondary sources?

A primary source is an original document or other piece of material that was created at the time of the actual events or within its time period. The material is ideally created by someone who is known and can be named, and it was produced for a known purpose.

Whereas primary sources are generally the original material, a secondary source builds upon one or more primary sources. Often, secondary sources will interpret, analyze, explain or describe content from primary sources.

Explanation:

we need an attachment to see what you are talking about.