Select primary or secondary for each source.
sources:
a letter written by sonia sotomayor to her mother

a commencement address given by sonia sotomayor

a documentary film about sonia sotomayor’s public speaking career

an essay about sonia sotomayor and other female justices

A letter written by Sonia Sotomayor to her mother  is a primary source because it is a first hand eddition.

A commencement address given by Sonia Sotomayor is a primary source because it directly given by herself.

A documentary film about Sonia Sotomayor’s public speaking career  secondary source because a third party is telling the story.

An essay about Sonia Sotomayor and other female justices is a secondary source because it is not a direct account is told by a third party.

the answer is   b suffix addition

i think it's either 'to expose the corruption of the communists in russia', or 'to criticize animal brutality by communists in russia.'  

hope this ! : )