Concept:Syllogism uses set relationships; "All A are B" does not imply "All B are A".Explanation:• Statement: All boys are honest. (Boys ⊆ Honest)• Statement: Sachin is honest. (Sachin ∈ Honest)• Conclusion I: Sachin is a boy. (Sachin ∈ Boys?) Not necessarily, because honest people can include non-boys.• Conclusion II: All honest persons are boys. (Honest ⊆ Boys?) This is the converse of the given statement, which is not valid.Answer:Neither conclusion I nor II follows.