An expert witness is testifying in a civil trial about the impact of a chemical spill on local water sources. Which of the following best describes an appropriate basis for the expert's testimony under the 'Bases of testimony' standard?
The expert's conclusion based on a recognized scientific methodology and data from relevant studies.
Hearsay statements from other experts in the field used to support the testimony.
The expert's personal opinion formed without reliance on any empirical data or studies.
Speculative assertions about potential future environmental impacts without supporting evidence.
The expert's conclusion is based on recognized scientific methodologies and supported by relevant data, which meets the standards for bases of testimony. Personal opinions without data, hearsay statements, and speculative assertions lack the necessary foundation and reliability required for admissible expert testimony.
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What is recognized scientific methodology?
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What types of data are considered relevant studies?
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What constitutes inadmissible testimony in a trial?