Which of the Following Accurately Describes Franz Ferdinand's Importance

Multiple Choice

Which of the following accurately describes Franz Ferdinand's importance?

A) His coup d'état in Germany led that country to declare war on Russia and France.
B) His studies of malaria allowed the U.S. Corps of Engineers to successfully deal with mosquitoes and build the Panama Canal.
C) His assassination sparked World War I.
D) His rise to the throne of Great Britain guaranteed Anglo-American cooperation.
E) His failure to make a firm stand against Serbia led to World War I.