What Did Englishman William Blackmore Imply When He Stated That

Multiple Choice

What did Englishman William Blackmore imply when he stated that "all authorities…are unanimous in predicting that the Red Men are a doomed race," in his introduction to The Plains of the Great West and Their Inhabitants?

A) The lack of immunity to many diseases ensured the extinction of American Indians.
B) The extermination of the buffalo would lead to the starvation of many Native Americans.
C) Whites were willing to assimilate American Indians into their society.
D) White progress through Manifest Destiny would eliminate American Indians.