Final answer:
The preferred way to communicate tax research results is through a formal written memorandum, due to its structured and detailed nature.
Step-by-step explanation:
After completing tax research, the researcher must communicate the findings in a clear and professional manner. The preferred form of communication is typically a memorandum. This is because a memorandum is a formal written document that can clearly convey the detailed outcomes and considerations of the tax research. Additionally, it allows for a comprehensive and structured approach that is essential in the complex and detailed nature of tax findings. Other forms of communication such as letters, emails, or oral presentations might be used depending on the context and the recipient, but the formal and detailed nature of a memorandum often makes it the preferred choice for tax research communication. It is important for the researcher to ensure the results are communicated effectively to maintain professionalism and clarity.