The answer is A because the people that settle in Jamestown, didn't know how to farm and how to survive because they were eager to find gold and silver but instead they found sickness and disease.(was this helpful to you?)
I agree with cool1212 that its A because back then people were not trained that much to find their own food. people came to Jamestown to find gold and silver but instead they found sickness and disease that killed more then thousands of people who went there for gold rush.