-How Does This Map Reveal American Engineers' Technological Ability to Control

-How does this map reveal American engineers' technological ability to control the natural elements that made construction of the Panama Canal so challenging?

A) The surrounding tropical jungle was removed to avoid any type of obstructions on the canal.
B) Construction was rerouted so that the waterway flowed through a natural lake.
C) A series of locks and dams was created to construct the waterway in an area prone to flooding.
D) Dynamite was used to blast through mountain ranges that prevented the canal from flowing across the Isthmus of Panama.