In a logical system, only postulates (or axioms) are considered universally true. Theorems and corollaries require proof, while conditional statements depend on specific conditions. Therefore, the correct answer is option C: Postulates.
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In a logical system, only postulates (or axioms) are universally true, while theorems and corollaries depend on proof. Conditional statements are only true under specific conditions. Therefore, the correct answer is option C: Postulates. ;