Difficulty: Easy
Correct Answer: Some dresses in that shop are expensive
Explanation:
Introduction / Context:
“Most” means “more than half.” From “Most dresses in that shop are expensive,” we must identify what must be true in every interpretation consistent with the statement.
Given Data / Assumptions:
Concept / Approach:
Translate the quantifier “most” into set/number terms, then test each option for necessity vs. possibility.
Step-by-Step Solution:
Verification / Alternative check:
Example satisfying statement: Out of 100 dresses, 70 expensive, 30 cheap ⇒ A true; B true in this model but not necessary across all models.
Why Other Options Are Wrong:
They assert more than the premise (B, C, D, E) or add unsupported categories (C).
Common Pitfalls:
Misreading “most” as “all”; assuming the existence of the complementary set without proof.
Final Answer:
Some dresses in that shop are expensive.
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