The answer is A. Selflessness
I am pretty sure that the following which was the main benefit to the spread of disease in the New World for the colonists is being revealed by the option : “Limited number of Natives available to fight back against the colonists”. I choose this one because that was the point which led Natives to show their weakness and captured by the colonists.
Hoope it helps!
Iron, ivory, gold, and salt were common goods
The colonists objected the British's taxes, and wanted the British to not have so much control over them. They thought that King George lll was a tyrant and wanted freedom.