Correct option is C
The correct one-word for the given group of words is (c) ambiguous.
Ambiguous: a statement open to more than one interpretation.
Meanings of other options:
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Apparent: clearly visible or understood; obvious.
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Absurd: wildly unreasonable, illogical, or inappropriate.
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Axiom: a statement or proposition which is regarded as being established, accepted, or self-evidently true.