Which item is an example of a primary source? a. a letter from an academic about he research.
b. a photograph of a civil rights march.
c. a biography of the president.
d. a website discussing the history of the united nations.

b. a photograph of a civil rights march.

Explanation:

The Primary source refers to evidence that was made during the historical event. That's why 'b' is the correct answer.

1 and 3

explanation:

learned it in 6th

benito

: ) hava a nice day