Final answer:
The dual meaning of "art hides his art" in the description of Pugmalion's statue is that epic heroes can have supernatural qualities. Thus the correct answer is B) Epic heroes can have qualities that one would expect only a supernatural being to have.
Step-by-step explanation:
The dual meaning of "art hides his art" in the description of Pugmalion's statue is that epic heroes can have qualities that one would expect only a supernatural being to have. This is option B.
The phrase suggests that the statue is so lifelike and realistic in its depiction of the hero that it appears as if it has come to life, possessing qualities beyond the ordinary limitations of art. This adds to the admiration and awe inspired by the statue.