In an MLA research paper, the hypothesis, if included, is typically mentioned or implied within the introduction section. The introduction provides background information on the research topic, establishes the research problem, and presents the thesis statement. While the hypothesis is more commonly associated with quantitative or experimental research designs, it may still be applicable to certain qualitative or exploratory studies. In the introduction, the researcher should clearly state the purpose of the study and outline the expected relationship or outcome being investigated. While the hypothesis may not be explicitly labeled as such, it should be presented in a clear and concise manner within the introduction, aligning with the overall focus of the research.