In preventing tablet breakage, how many of the following statements are correct?

• A. ALL statements are correct
• B. ONLY ONE statement is correct
• C. TWO statements are correct
• D. THREE statements are correct

Answer: (C)

This type of question tests reasoning with self-referential statements about how many of them are true. Each statement asserts a different total for how many statements are correct: four, one, two, or three. If exactly four statements were true, the claim that all are correct would be true, but the others would also have to be true, which is inconsistent, so that cannot happen. If exactly three statements were true, only the statement claiming three are correct would be true, leaving the others false, which also contradicts having three true. If exactly two statements were true, the statement claiming two are correct would be true, but the others would be false, again giving only one true, not two. If exactly one statement were true, the claim that exactly one is correct would be true while the other three would be false, yielding exactly one true statement, which is consistent. Therefore, the only self-consistent outcome is that exactly one statement is correct—the one that states that only one is correct. The option claiming two statements are correct cannot fit a consistent count.