Final answer:
The option 'Opinion' is not one of the basic parts of an internal research memo. Research memos should contain facts, issue, and analysis, focusing on objective information rather than personal belief.
Step-by-step explanation:
The basic parts of an internal research memo in the context of legal writing typically include Facts, Issue, and Analysis. These components are essential for providing a clear and structured assessment of a legal issue. The option Opinion is NOT one of the basic parts of an internal research memo because such memos aim to objectively present information and analysis rather than the author's personal beliefs or conclusions.
Understanding the distinction between facts, which are statements that can be proven, and opinions, which are statements of belief, is important in legal writing. This distinction ensures that the analysis in a research memo remains objective and is supported by evidence rather than personal viewpoints. Therefore, the correct answer to the question is D) Opinion.