The appropriate punctuation to complete the sentence describing the Sphinx would be dash correct option is b.
In describing the Sphinx—a captivating creature from ancient mythology—the sentence intends to provide additional information about its unique features. Using a dash emphasizes a sudden shift or interruption in the sentence structure.
which suits the abrupt transition from discussing the Sphinx's body to detailing the various heads it's depicted with. The dash denotes an emphatic pause, serving as a stylistic choice to create emphasis and intrigue.
This punctuation choice helps draw attention to the intriguing combination of a lion's body with varied human and animal heads, capturing the imagination and emphasizing the enigmatic nature of this mythological being, symbolizing complexity and mystery in ancient lore.