Which of the following was a u. s. response to the publication of alfred thayer mahan's book, the influence of sea power upon history

If the choices are:
annexation of the Hawaiian Islands 
expansion of the United States navy
construction of the Panama Canal 
announcement of the Open Door Policy
 It would be the expansion of the United States navy. During that time, the United States has a weak navy and could not withstand a powerful rival nation in naval superiority. This book made the navy realized the need of a powerful and an expanded United States Navy. This book also make the navy realized the importance and significance of a naval power in the history of nations and empires.

The answer is c. good luck : )