Which of the following comprised of seven bones?

Correct option is A

Sol. The cervical vertebrae in the human spine are seven in number (C1 to C7). They form the neck portion of the vertebral column and support the skull while allowing head movement.
Explanation of each option:
· (a) Cervical vertebrae – Correct answer. There are 7 cervical vertebrae in the neck region, the smallest and most mobile vertebrae in the spine.
· (b) Carpals – There are 8 carpal bones in the wrist, arranged in two rows.
· (c) Cranial bones – The skull has 8 cranial bones, including the frontal, parietal, occipital, temporal, sphenoid, and ethmoid bones.
· (d) Lumbar vertebrae – These are 5 in number, located in the lower back region (L1–L5).