The most accurate analysis of the relationship between planters and slavery among the options provided is: "Elsewhere, wealth and power of planters was dependent on the labor of enslaved people."
This statement reflects the historical reality that planters in the South, particularly in states like South Carolina and others in the Deep South, relied heavily on the labor of enslaved people to generate wealth, particularly in cash crop agriculture such as cotton, tobacco, and rice. The other options either downplay the planters' involvement in the slave trade or mischaracterize their reliance on enslaved labor. While some planters might have preferred hiring paid labor when possible or had varying levels of involvement in the slave trade, the overall system of plantation agriculture was fundamentally dependent on the exploitation of enslaved labor for economic success.