What was a primary challenge faced by the Jamestown colonists during the first few years?

A. They lacked knowledge about the land and how to use their environment to survive.
B. All of the crops they grew had to be shipped back to king James in England.
C. They chose an unsecure location, making it easy for the Spanish to find them.
D. They faced trading competition from the French and the Dutch.

A. They lacked knowledge about the land and how to use their environment to survive.