In General,how Did Proslavery Defenses Change from the Beginning to the Middle

In general,how did proslavery defenses change from the beginning to the middle of the nineteenth century?

A) Apologists began to describe slavery as a positive good rather than a necessary evil.
B) Apologists abandoned religious claims and based their defenses of slavery solely on "scientific" theories.
C) Apologists began to argue that slavery would die a natural death as long as abolitionists did not end it prematurely.
D) Apologists began to abandon paternalistic arguments in favor of capitalistic ones.