Answer:
Option: D. Most Europeans refused to endure the harsh labor conditions on southern plantations.
Explanation:
Life was very harsh and struggle in the colonies, so servants were required to lessen the burden from the colonists. White indentured servants became common in this region during the early settlement. In the South, they refused to work in the fields because of the harsh condition and the climate, which made them sick.
Indentured servants were not much depended in the Southern states during colonial-era because they were part of the contract. As the requirement of servants increased, it became harder to get them as many refused to work and were expensive because they shipped from England. The alternative turned towards slavery, forced to work in the fields with no contract sign for releasing them.