Final answer:
James Oglethorpe's recruitment of Highland Scots for the settlement on the Altamaha River was a defensive measure, aligning with the Charter of 1732's goal of creating a military buffer in Georgia. The correct option is D.
Step-by-step explanation:
James Oglethorpe's decision to recruit Highland Scots to establish a settlement on the Altamaha River is evidence of the defense reason for colonization as described in the Charter of 1732.
This strategic move was part of Oglethorpe's plan to create a military buffer between the Carolinas and the Spanish holdings in Florida, and the settlers, including Highland Scots, were expected to serve as a militia force against any potential threats from the Spanish and Native American populations.
The Highland Scots were known for their warrior reputation and could provide a strong defense for the young colony.