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Option 3 : Conclusion I and either conclusion II or III follow
The least possible Venn diagram is:
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I. Some black are shoes → True (as some shoes are black)
II. Some heels are black → False (it is possible but not definite)
III. No heels are black → False (it is possible but not definite)
∵ Conclusion II and III are complementary to each other, one of them will be true
Hence, ‘Conclusion I and either conclusion II or III follow’ is the correct answer.
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