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Directions: Choose the word or set of words for each blank that best fits the meaning of the sentence as a whole.
The notion that a parasite can alter the behavior of a host organism is not mere fiction; indeed, the phenomenon is not even _________.
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A
rare
💡 Explanation:
Rare is the correct answer because the sentence is suggesting that changes in behavior is not uncommon, therefore if they are common, they are not rare.