Answer: Each nation must decide for itself how it will meet it
Explanation: The excerpt from "War Message to Congress" that expresses President Wilson's opinion is Each nation must decide for itself how it will meet it. In this message to Congress delivered on April 2nd, 1917, President Wilson says that things have worsened. Germany has attacked neutral nations' ships. Germany has sunk American ships and has taken American lives. He thinks that this is a challenge for the peace of all mankind, and each nation must decide for itself how it will meet it.