Q: Which section of a research paper includes the answers to the research question?

I have edited your question slightly for clarity. By "questions" I assume you are referring to the research questions that you present towards the end of the introduction.

Basically, these are the questions you explore through your research. The answers to these questions are your research findings. The methods you use or the experiments that you conduct are all directed at finding the answers to your research questions. Thus, we can say that the Results and Discussion sections include the answers to your research question. In the Results section, you include the findings of your experiments, and in the Discussion section, you analyze these findings and explain how they answer the research question that you started out with.

I hope this answers your question.

Related reading:

• INFOGRAPHIC: 5 Differences between the results and discussion sections
• The secret to writing the results and discussion section of a manuscript
• Should I continue working on my manuscript if the research results are non-significant?