The Answer Is C. I Just took the test and got it right!
King James 1 was important to the survival of the Jamestown settlers because he was the first monarch to establish successful colonies in the Americas. He appointed mercantile charters to English joint stock companies to found and run settlements and he was certainly heading the Jamestown settlement. The direction for funding and managing was under his reign
Your answer would be Charles Darwin and Alfred Russel Wallace.
Hope this helps!