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From the given options, which statement characterizes a Tautology?

  1. Two types of Conclusions

  2. Define Assertion of Truth

  3. needless repetition of an idea, statement, or word

  4. Some professors at the school teach Spanish.

The correct answer is: needless repetition of an idea, statement, or word

A tautology is a statement that is always true, regardless of the truth values of its individual components. Option C, "needless repetition of an idea, statement, or word," characterizes a tautology because it emphasizes the concept of unnecessary repetition, implying that the statement will always hold true due to its self-repeating nature. Options A, B, and D do not accurately describe a tautology. Option A discusses different types of conclusions, which is not directly related to a tautology. Option B mentions defining the assertion of truth, which is not specific to representing a tautology. Option D presents a statement about professors teaching Spanish, but it does not relate to the concept of a tautology.