In species of Araucariaceae, tracheid length is generally greater than in most other conifer families. A researcher examined several specimens of Araucaria angustifolia and found that their tracheids were unusually short. The researcher concluded that Araucaria angustifolia is not representative of the Araucariaceae family in terms of tracheid length.
The flawed pattern of reasoning in the argument above is most similar to that in which one of the following arguments?
