If all surgeons are doctors and some doctors are researchers, which conclusion definitely follows?
Correct answer: D. No conclusion about surgeons and researchers definitely follows
- A. All surgeons are researchers
- B. Some surgeons are researchers
- C. All researchers are doctors
- D. No conclusion about surgeons and researchers definitely follows
Explanation
The researchers who are doctors might all be non-surgeons, so nothing definite links surgeons to researchers. A conclusion is only valid if it holds in every arrangement the premises allow, not merely in the most natural looking one. The third option reverses the second premise, which said only that some doctors are researchers.
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About Syllogisms
Syllogisms use categorical statements such as all, some and no to establish relationships between groups. Questions require checking whether conclusions necessarily follow from the premises, often by mental set relationships or Venn diagrams, and distinguishing valid deductions from conclusions that are merely possible.
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