Based on Douglass's description of enslavement as "the blood-stained gate, the entrance to the hell of slavery," his attitude toward enslavement can be interpreted as one of deep condemnation and horror. He views enslavement as an "awful experience filled with brutal violence," signifying the suffering and inhumanity that characterized the institution of slavery. Thus, the response that best reflects Douglass's attitude is:
Enslavement was an awful experience filled with brutal violence.