Expert opinions cannot be presented without stating the underlying factual basis.

• A. True
• B. Sometimes
• C. False
• D. Only with citations

Answer: (C)

The idea being tested is that expert opinions must always spell out every factual detail that supports the conclusion. In practice, an expert’s opinion is valid when it’s based on reliable data, tested methods, and sound reasoning, but it doesn’t require listing every single fact behind the conclusion in the testimony itself. The expert can present the conclusion and describe the data, tests, and methodology used to reach it, with the full underlying data available in the report or records or provided if requested during cross-examination. This balance helps keep the testimony focused while still showing there’s a solid basis for the opinion.

So, the statement is false because you can present an expert opinion with a clear explanation of the data and methods relied upon, without enumerating every underlying fact in the spoken testimony.