Question

Which item in the list are secondary sources a historian could use to contextualize why a political revolution occurred in egypt in 2011?

Answer 1

Secondary sources are the documents that written about the political revolution beside the one that involved.

since you provide no options, example of the secondary sources are :
- Local news paper that told the story about the event
- Letter from one citizen to another that tell the story of the event

hope this helps

Answer 2

Which item in the list are secondary sources a historian could use to contextualize why a political revolution occurred in egypt in 2011?

Answer: You did not provide a list of secondary sources so the least I can do is explain what this are and how to identify them. Secondary Sources are documents that were written after an event has occurred, providing secondhand accounts about that event, person, or topic.

Some examples:
Encyclopedias
Textbooks
Books

I hope it helps, Regards.