Given premises: 'All public school teachers are civil service eligibles.' and 'Mrs. Santos is a public school teacher.' What valid deductive conclusion follows?
Answer and explanation
Correct answer: B. Mrs. Santos is a civil service eligible
- Step 1: Major premise: All M (teachers) are P (eligibles). Step 2. Minor premise: S (Mrs. Santos) is M (teacher). Step 3. Conclusion: S (Mrs. Santos) is P (eligible). Answer: Mrs. Santos is a civil service eligible, by categorical deductive syllogism (Barbara). Why not the others: Converting 'All A are B' to 'All B are A' is the fallacy of illicit conversion.
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