True? I don't quite understand what you are asking, but the answer is correct to the question.
Austria-Hungary's invasion of Serbia led to the start of World War I. The correct option among all the options given in the question is the third option. The assassination of Franz Ferdinand, who was also the Archduke of Austria-Hungary by Gavrilo Princip acted as the catalyst for the starting of the World war I. Gavrilo Princip was a Serbian national.
Answer:
a. Imperialists argued that stronger countries should naturally dominate weaker countries.
Explanation:
Social Darwinism was the belief that certain people became powerful in society merely because they are naturally superior. Many imperialists believed that it was their duty to "purify" the inferior population.