The correct answer is D) scalawags.
A free soiler refers to a person who wanted the territory that the United States gained during the middle of the 19th century to be free of slavery. These free soilers were focused on giving this land to white farm owners who could become self sufficient.
Abolitionists were individuals who wanted to get rid of the institution of slavery before the Civil War.
Carpetbaggers refers to Northern citizens who moved to the South during the era of Reconstruction in hopes of making a profit of the new econoic structure of the South.
This shows that only letter D can be the correct answer.