A Veterinarian Is Interested in Studying the Causes of Enteroliths

question 24

Multiple Choice

A veterinarian is interested in studying the causes of enteroliths (stones that form in the gut of horses) . An observational study comparing the diet of horses admitted to the veterinary hospital with enteroliths and the diet of horses admitted for other reasons does not allow causal conclusions to be drawn because:

• A)an observational study can only establish correlations, unless the investigator is double blinded.
• B)associations in observational studies can be confounded by lurking variables.
• C)the study does not match horses.
• D)All of the answer options are correct.

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