B. “and stretches out a colossal hand”
In literature, hyperbole is a way of speaking or writing in an exaggerated manner used to emphasize, to add humor or to gain attention on something. It is common to use words or phrases that are obviously false; and unlike a simile, hyperbole don't use words such as "like" and "as".
In this case, "colossal" is an exaggerated word that conveys that the hand is big, perhaps way bigger than average.