Answer: Clustered settlements were located on plantations to house the laborers who were hired to harvest the crops.
Step-by-step explanation:
Clustered settlements on plantations were constructed to house the laborers who were hired to harvest the crops. This was done to keep the workforce close to the fields and make it easier for the plantation owners to supervise and control the workers. The other options you provided could also be reasons behind the formation of clustered settlements, but the primary reason for clustered settlements on plantations is to house the labors.