The audience for a particular piece of writing is a professor. The purpose of the text is to show knowledge about a major cause of World War II.

What form of writing and what kind of supporting details best support this audience and purpose?

When writing for a professor about a major cause of World War II, a well-researched and scholarly essay would be the most appropriate form of writing. The supporting details should include references to primary sources such as historical documents, speeches, and treaties to showcase in-depth knowledge of the topic. Additionally, using statistics, timelines, and analyses from reputable historians can help strengthen the argument and demonstrate a thorough understanding of the cause in question. A clear thesis statement at the beginning of the essay, followed by a structured and logical progression of arguments with supporting evidence, will help the professor follow the line of reasoning and assess the depth of knowledge on the subject. Overall, a well-written and meticulously researched essay with strong supporting details will best support the audience and purpose of showing knowledge about a major cause of World War II to a professor.