Final answer:
The majority of southern whites didn't own slaves mainly due to the high cost, while also adhering to a racial ideology that aligned them with elite slaveholders and diminished class tensions. The correct answer is option b.
Step-by-step explanation:
The majority of southern whites owned no slaves primarily because they could not afford the purchase price. While a small class of elite slaveholders existed, most white southerners shared a common culture and set of values centered on white supremacy. Slavery in the South was an economic system that benefited the few; however, it also served to decrease class tensions among white people by establishing a unified racial ideology. Slavery defused class tensions among the non-slaveholding whites by giving them a sense of superiority over enslaved African Americans, despite their own economic hardships.
Although many white southerners aspired to the wealth that came with enslaving large numbers of people, two-thirds of white households did not own any slaves by 1860. This unequal distribution of wealth was upheld by the belief in a racial hierarchy. In this societal landscape, even non-slaveholders accepted the rule of the plantation owners as it was perceived as a defense of a shared interest in maintaining a racial hierarchy.