I believe that it would be B that there are no single topic sentence
the answers c trust me i followed the advice tht the other guy gave me and i got is wrong the answer is c
Also, another cause of the lack of political focus during Reconstruction was the great economic prosperity in the North following the Civil War. ... The failure of the North to effectively rebuild the South and bring it back into the Union during Reconstruction is evident after the time period.
It is correct but you could use words that people would more understand.
If you were referring to groceries or things you buy from the store, you could say:
He left all his items on the bus.
He left all his groceries on the bus.
(<em>Your answer is great this is just a suggestion) </em>