I need some help with writing. I would like to know if it's possible to have a question as a thesis statement, or it has to be a statement.
Your thesis statement is the main point of your essay. It is your conclusion, the result of your research. You might begin your research or your writing project with a question you want to answer, but your thesis statement should be your answer to that question. As such, I believe it should be a statement and not a question.