The correct answer is the Sphenoid bone. The Sphenoid bone is a complex bone located at the base of the skull. It is shaped like a butterfly and forms part of the cranial floor. The bone is situated in the middle of the skull and connects with many other bones, including the frontal, parietal, temporal, and occipital bones. It also contains several important structures, such as the sella turcica, which houses the pituitary gland. The Sphenoid bone is crucial for providing structural support to the skull and protecting vital organs within the cranial cavity.