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A negative value for the Item Discrimination Index (D) suggests that the test item:

A) Is too easy
B) Is too difficult
C) Is flawed and should be revised or discarded
D) Has a high reliability

Correct Answer: C) Is flawed and should be revised or discarded

A negative D means that low-achievers are answering the item correctly more often than high-achievers, indicating a serious flaw like ambiguity or a trick question.

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