Final answer:
One tool for determining the purpose of your essay is to craft a compelling thesis.
Step-by-step explanation:
To determine the purpose for your essay, one tool you can use is to craft a compelling thesis. A thesis statement is a concise summary of the main point or argument of your essay and it helps clarify the purpose and direction of your writing. It gives your readers an idea of what to expect and guides your essay's content.
For example, if you are writing an essay about the impact of social media on society, a compelling thesis could be: 'Social media has revolutionized communication and transformed the way people connect and interact.'
By crafting a compelling thesis, you establish a clear purpose for your essay and effectively communicate the main focus to your readers.