The _______ is a Single Bone Composed of Five Fused

Question

The _______ is a single bone composed of five fused vertebrae.
A) cervical
B) sacrum
C) lumbar
D) spinal column

Accepted Answer

The sacrum is a single bone composed of five fused vertebrae at the bottom of the spinal column. The cervical and lumbar are regions of the spinal column, and the spinal column as a whole is made up of individual vertebrae.