The dodo bird used to roam in large flocks across America. However, the dodo wasn't startled by gun shot. Because of this, frontiersmen would kill entire flocks in one sitting. Unable to sustains these attacks, the dodo was hunted to extinction. Which type of structures on the last example can represent?

A. Chronological.

B. Cause and Effect.

C. Compare and Contrast.

D. Problem and Solution.

E. Sequence / Process.

F. Spartial / Descriptive​​​​​