Answer:
In expository writing, a topic sentence is a sentence that summarizes the main idea of a paragraph. It is usually the first sentence in a paragraph. Also known as a focus sentence, it encapsulates or organizes an entire paragraph.
Explanation:
The soothsayers says to Caesar "Beware the ides of March!"
I’m pretty sure it is a simile because it says and almost break -like- and a simile is like or as being used to relate to something. Hope you have a good rest of your day !!