Which device does the author use in the phrase, "running to the top of the moraine, i discovered that the tremendous noise was only the outcry of a newborn berg about fifty or sixty feet in diameter, rocking and wallowing in the waves it had raised as if enjoying its freedom after its long grinding work as part of the glacier"?

a. allusion
b. personification - my answer
c. hyperbole
d. paradox
e. onomatopoeia