Answer:
Correct answer is c : "It caused public opinion to turn against the Germans even more."
Explanation:
The effect of the sinking of the Lusitania was that It caused public opinion to turn against the Germans even more.
The Lusitania was a British ship that had a lot of Americans and was headed to Britain.
The Germans sank it which led to the deaths of over a 100 Americans. As a result, American public opinion was against Germany even more because it was against them already.
Find out more on the sinking of the Lusitania at https://brainly.com/question/1915449.